In adapting the integration tests to output from new Gerrit
versions, we observed possible nondeterministic ordering or content
in some of the fields. We don't need to be nearly so specific in the
strings we match anyway, so simplify them for robustness against
variable output from the service and improved future flexibility.
Change-Id: Icbd70d9c8c9da3637cfa5722a636d140597fe623
f02b41df74