REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4693
Commit signatures are checked and error messages are logged but
errors are not captured and returned from find_signatures() in the
CommitMessageCheck class. This causes signature errors to be
silently ignored by CI.
Update logic in CommitMessageCheck class to return errors
detected in commit message signatures.
Cc: Rebecca Cran <rebecca@bsdio.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Yuwei Chen <yuwei.chen@intel.com>
Cc: Michael Kubacki <mikuback@linux.microsoft.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Rebecca Cran <rebecca@bsdio.com>
45ad13bb64