BUG: filter_exclude fails when execute in specific context

[The-Mule]

SElinux context is parsed in filter_exclude test incorrectly:

if($subj =~ /([^:]+):([^:]+):([^:]+):([^-]+)-([^-]+)/) {
        ($subj_user, $subj_role, $subj_type, $subj_sen, $subj_clr) = ($1, $2, $3, $4, $5);
}

When there is no clearance (eg. system_u:unconfined_r:unconfined_t:s0 [*]) parsing will not work. The following regex works: ([^:]+):([^:]+):([^:]+):([^-]+)-?([^-]+)?.

Please notice that clearance is used in several places of the test and hence we need to fix those parts as well.

[*] FYI, when I am running testsuite via Beaker, tests are executed with this context.

Reproducer: runcon system_u:unconfined_r:unconfined_t:s0 make tests

[The-Mule]

Quick fix - The-Mule@783e2a5

[rgbriggs]

Understood. The fix looks good to me.