[program-gen] Fix emitted import statements in generated programs suc… #3432

Job	Run time
prerequisites	4m 40s
Lint pkg	1m 23s
go-tests	10m 15s
test_templates	3m 54s
test_integrations (stack-reference)	1m 24s
examples (aws-java-eks-minimal)	2m 21s
test_integrations (stack-transformation)	1m 2s
examples (aws-java-webserver)	2m 4s
test_integrations (adopt-into-component)	1m 11s
examples (aws-native-java-s3-folder)	1m 54s
test_integrations (rename)	1m 12s
examples (azure-java-appservice-sql)	1m 50s
test_integrations (rename-component)	1m 8s
examples (azure-java-static-website)	1m 40s
test_integrations (rename-component-and-child)	1m 17s
examples (gcp-java-gke-hello-world)	2m 5s
test_integrations (retype-component)	2m 12s
examples (kubernetes)	1m 25s
test_integrations (retype-parents)	1m 5s
examples (minimal)	1m 39s
examples (minimalsbt)	2m 1s
examples (random)	1m 49s
	49m 31s

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