atlasaction: move template test to testscript #1291

Job	Run time
golangci-lint	22s
shim	15s
shim-e2e	6s
migrate-test	11s
schema-test	10s
unit-tests	1m 4s
migrate-down	14s
monitoring	40s
schema-apply (lint-review)	11s
schema-plan	8s
schema-apply (on-the-fly, true)	17s
schema-plan-approve	0s
schema-apply (remote-repo, atlas://atlas-action/plans/20240910183610, atlas://atlas-action?tag=e2e)	14s
schema-push	13s
schema-apply (local-plan, file://20240910173744.plan.hcl)	15s
schema-apply (multiple-envs, file://20240910173744.plan.hcl)	8s
schema-apply (legacy, v0.27.0, true)	14s
	4m 42s

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