Don't cache Java executors #3185

Job	Run time
prerequisites	5m 40s
Lint pkg	4m 4s
go-tests	5m 25s
test_templates	8m 44s
test_integrations (stack-reference)	2m 16s
examples (aws-java-eks-minimal)	3m 38s
test_integrations (stack-transformation)	2m 2s
examples (aws-java-webserver)	3m 8s
test_integrations (adopt-into-component)	2m 11s
examples (aws-native-java-s3-folder)	2m 58s
test_integrations (rename)	2m 18s
examples (azure-java-appservice-sql)	3m 6s
test_integrations (rename-component)	2m 23s
examples (azure-java-static-website)	2m 50s
test_integrations (rename-component-and-child)	2m 22s
examples (gcp-java-gke-hello-world)	3m 13s
examples (kubernetes)	5m 3s
test_integrations (retype-component)	2m 27s
examples (minimal)	2m 54s
test_integrations (retype-parents)	2m 15s
examples (minimalsbt)	3m 3s
examples (random)	2m 46s
	1h 14m 46s

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