test: add acceptance tests for the deletion of an endpoint

[lriberon]

Description

The deletion of an endpoint resource has been tested manually and an Acceptance test has been created for it.

How to test?

Run Acceptance tests

Run the make testacc command to run all the Acceptance Tests.

Manually

1. Create a new endpoint resource (you can follow the steps provided in feat: add validations func & create acceptance tests #32 to create a new endpoint resource)
2. Delete the resources in your main.tf file by running the destroy command: terraform destroy
3. You should have the following output: Destroy complete! Resources: 1 destroyed.