util: android disable mirror selection

[kralo]

this is what {termux}/scripts/termux-change-repo.in does at the end

this is an attemp at fixing #5893 which tries an unreachable mirror

[github-actions]

GNU testsuite comparison:

Skip an intermittent issue tests/tail/inotify-dir-recreate (fails in this run but passes in the 'main' branch)

[kralo]

disabling mirror detection.
the shipped version of pkg in the image is so broken that it does not detect one mirror as broken, and subsequent package loading fails.

[kralo]

to explain this better: this PR improves android image generation/termux installation,

and the !5896 is for the test, that apparently is now running on android

--- TRY 3 STDERR:        coreutils::tests test_cp::test_cp_preserve_xattr_fails_on_android ---
thread 'test_cp::test_cp_preserve_xattr_fails_on_android' panicked at tests/by-util/test_cp.rs:1466:10:
Command was expected to fail.
stdout = 
 stderr = 
stack backtrace:
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

[sylvestre]

excellent, thanks
could you please disable test_cp_preserve_xattr_fails_on_android as ride along ?

[sylvestre]

sweet!