[dash] Improve dash test cases

[jimmyzhai]

Description of PR

Summary:
Enhance vnet test cases to pass on kvm sonic dpu with the use of DASH API update.

Type of change

• Bug fix
• Testbed and Framework(new/improvement)
• New Test case
  • Skipped for non-supported platforms
• Test case improvement

Back port request

• 202012
• 202205
• 202305
• 202311
• 202405
• 202411

Approach

What is the motivation for this PR?

The test cases are failing towards the latest dash pipeline on kvm dpu.

How did you do it?

• Update basic config template for calling DASH API correctly, specially using API ENI_ROUTE to assign routing group to eni.
• Apply gnmi file with max update - 1 in single command, which avoids dash object dependency in dash orch.
• Ignore underlay src/dst ether mac and ip ttl in packet verification

How did you verify/test it?

./run_tests.sh -u -n vms-kvm-dpu -d vlab-01 -m individual -e --skip_sanity -e --disable_loganalyzer -c dash/test_dash_vnet.py -f vtestbed.yaml -i ../ansible/veos_vtb

dash/test_dash_vnet.py::test_outbound_vnet[udp-no-underlay-route] PASSED                                                                                                                                             [  3%]
dash/test_dash_vnet.py::test_outbound_vnet[udp-with-underlay-route] PASSED                                                                                                                                           [  6%]
dash/test_dash_vnet.py::test_outbound_vnet[tcp-no-underlay-route] PASSED                                                                                                                                             [  9%]
dash/test_dash_vnet.py::test_outbound_vnet[tcp-with-underlay-route] PASSED                                                                                                                                           [ 12%]
dash/test_dash_vnet.py::test_outbound_vnet[echo_request-no-underlay-route] PASSED                                                                                                                                    [ 15%]
dash/test_dash_vnet.py::test_outbound_vnet[echo_request-with-underlay-route] PASSED                                                                                                                                  [ 18%]
dash/test_dash_vnet.py::test_outbound_vnet[echo_reply-no-underlay-route] PASSED                                                                                                                                      [ 21%]
dash/test_dash_vnet.py::test_outbound_vnet[echo_reply-with-underlay-route] PASSED                                                                                                                                    [ 25%]
dash/test_dash_vnet.py::test_outbound_vnet_direct[udp-no-underlay-route] PASSED                                                                                                                                      [ 28%]
dash/test_dash_vnet.py::test_outbound_vnet_direct[udp-with-underlay-route] PASSED                                                                                                                                    [ 31%]
dash/test_dash_vnet.py::test_outbound_vnet_direct[tcp-no-underlay-route] PASSED                                                                                                                                      [ 34%]
dash/test_dash_vnet.py::test_outbound_vnet_direct[tcp-with-underlay-route] PASSED                                                                                                                                    [ 37%]
dash/test_dash_vnet.py::test_outbound_vnet_direct[echo_request-no-underlay-route] PASSED                                                                                                                             [ 40%]
dash/test_dash_vnet.py::test_outbound_vnet_direct[echo_request-with-underlay-route] PASSED                                                                                                                           [ 43%]
dash/test_dash_vnet.py::test_outbound_vnet_direct[echo_reply-no-underlay-route] PASSED                                                                                                                               [ 46%]
dash/test_dash_vnet.py::test_outbound_vnet_direct[echo_reply-with-underlay-route] PASSED                                                                                                                             [ 50%]
dash/test_dash_vnet.py::test_outbound_direct[udp-no-underlay-route] PASSED                                                                                                                                           [ 53%]
dash/test_dash_vnet.py::test_outbound_direct[udp-with-underlay-route] PASSED                                                                                                                                         [ 56%]
dash/test_dash_vnet.py::test_outbound_direct[tcp-no-underlay-route] PASSED                                                                                                                                           [ 59%]
dash/test_dash_vnet.py::test_outbound_direct[tcp-with-underlay-route] PASSED                                                                                                                                         [ 62%]
dash/test_dash_vnet.py::test_outbound_direct[echo_request-no-underlay-route] PASSED                                                                                                                                  [ 65%]
dash/test_dash_vnet.py::test_outbound_direct[echo_request-with-underlay-route] PASSED                                                                                                                                [ 68%]
dash/test_dash_vnet.py::test_outbound_direct[echo_reply-no-underlay-route] PASSED                                                                                                                                    [ 71%]
dash/test_dash_vnet.py::test_outbound_direct[echo_reply-with-underlay-route] PASSED                                                                                                                                  [ 75%]
dash/test_dash_vnet.py::test_inbound_vnet_pa_validate[udp-no-underlay-route] PASSED                                                                                                                                  [ 78%]
dash/test_dash_vnet.py::test_inbound_vnet_pa_validate[udp-with-underlay-route] PASSED                                                                                                                                [ 81%]
dash/test_dash_vnet.py::test_inbound_vnet_pa_validate[tcp-no-underlay-route] PASSED                                                                                                                                  [ 84%]
dash/test_dash_vnet.py::test_inbound_vnet_pa_validate[tcp-with-underlay-route] PASSED                                                                                                                                [ 87%]
dash/test_dash_vnet.py::test_inbound_vnet_pa_validate[echo_request-no-underlay-route] PASSED                                                                                                                         [ 90%]
dash/test_dash_vnet.py::test_inbound_vnet_pa_validate[echo_request-with-underlay-route] PASSED                                                                                                                       [ 93%]
dash/test_dash_vnet.py::test_inbound_vnet_pa_validate[echo_reply-no-underlay-route] PASSED                                                                                                                           [ 96%]
dash/test_dash_vnet.py::test_inbound_vnet_pa_validate[echo_reply-with-underlay-route] PASSED                                                                                                                         [100%]

Any platform specific information?

platform: kvm sonic dpu
topo: vms-kvm-dpu

Supported testbed topology if it's a new test case?

Documentation

[mssonicbld]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).