Rewrite regular expressions to be RE2 compliant

Zuul complains because we use negative lookahead "(?!"
in our regular expressions which is not supported by
Google RE2 syntax.

Co-Authored-By: Gregory Thiemonge <gthiemon@redhat.com>
Change-Id: I7894b564d054a0a925b5c6bb563ec2316386b8c1
1 file changed