FAIL: TestSetRemapUserGroupOpts

[siretart]

The test added in #1620 fails while building the debian package:

=== RUN   TestSetRemapUserGroupOpts
    options_test.go:194: 
        	Error Trace:	/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/src/github.com/containers/storage/types/options_test.go:194
        	Error:      	Received unexpected error:
        	            	no subuid ranges found for user "siretart" in /etc/subuid
        	Test:       	TestSetRemapUserGroupOpts
--- FAIL: TestSetRemapUserGroupOpts (0.00s)

cc: @sstosh

[siretart]

I believe the test makes assumptions that hold in CI but not on the build machines in Debian (and probably other distributions). Any chance to make the test skip automatically if /etc/subuild is not setup appropriately? -- I'd prefer to not distro patch this issue if possible

[rhatdan]

I am fine with that, but what is the test? If root or entry in /etc/subuid?

[siretart]

Debian builds often run in https://manpages.debian.org/testing/pseudo/fakeroot.1.en.html -- so just testing for UID==0 might not be the best choice. Checking for entry in /etc/subuid seems more reliable to me

[rhatdan]

SGTM