Add policy for file ops. #13678

Job	Run time
check_if_release_branch	1s
towncrier_check	8s
changed_files	7s
build mirrord CLI	0s
integration_tests	14m 48s
lint	6m 36s
lint_markdown	0s
check-rust-docs	4m 17s
macos_tests	36m 15s
test_agent	3m 18s
test_agent_image	6m 9s
test_cli_image	15m 9s
e2e (docker)	15m 0s
e2e (containerd)	14m 55s
vscode_e2e_on_release_branch	0s
intellij_e2e_on_release_branch	0s
ci	1s
	1h 56m 44s

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