tests: do not include skipped tests in failedTests
tests: do not include skipped tests in failedTests

We recognize three return values from tests:
* OK    -> 0
* SKIP  -> EXIT_AM_SKIP
* ERROR -> anything else

Also check for EXIT_AM_SKIP when building a bitmap of failed tests,
otherwise the skipped tests would be printed in the suggested range
of tests that shoud be re-run.

Reported-by: Peter Krempa <2cf5c04c61aa466e4a47bfedc747d17279c72ffc@redhat.com>
Signed-off-by: Ján Tomko <4cab11cfb98d3c937327354a78eb07dbb6ee2bc6@redhat.com>
Fixes: cebb468ef5e82b8d4253e27ef70c67812cf93c5a
Reviewed-by: Peter Krempa <2cf5c04c61aa466e4a47bfedc747d17279c72ffc@redhat.com>

nertpinx/libvirt,jfehlig/libvirt,nertpinx/libvirt,jardasgit/libvirt,jfehlig/libvirt,zippy2/libvirt,zippy2/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,libvirt/libvirt,nertpinx/libvirt,jfehlig/libvirt,libvirt/libvirt,jardasgit/libvirt,crobinso/libvirt,crobinso/libvirt,fabianfreyer/libvirt,libvirt/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,crobinso/libvirt,zippy2/libvirt,fabianfreyer/libvirt,olafhering/libvirt,olafhering/libvirt,fabianfreyer/libvirt,olafhering/libvirt,olafhering/libvirt,nertpinx/libvirt,zippy2/libvirt,crobinso/libvirt,jardasgit/libvirt,libvirt/libvirt,jfehlig/libvirt,nertpinx/libvirt