Add the status "patched" to the BugSummary document field type

587c1cb let bugs marked "patched" be counted from rt.cpan.org, but
mistakenly didn't update the field definition to allow "patched".
RT's bugs data changed format, update the local test version to match

This should have been part of 587c1cb and dbdc06e.
Merge pull request #263 from tsibley/add-patched-to-bugsummary-type

Add patched to bugsummary type + update tests