Add statfs support #13920

Job	Run time
towncrier_check	11s
check_if_release_branch	1s
changed_files	7s
build mirrord CLI	0s
test_agent	1m 30s
lint	1m 41s
test_agent_image	1m 43s
macos_tests	1m 28s
integration_tests	1m 34s
check-rust-docs	1m 0s
test_cli_image	1m 31s
lint_markdown	0s
intellij_e2e_on_release_branch	1s
vscode_e2e_on_release_branch	1s
e2e	1s
ci	1s
	10m 50s

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