beta: adding gwtoolset jobs to $wgJobTypesExcludedFromDefaultQueue

there seems to be a problem with the job runner picking up the
gwtoolset jobs. hopefully adding them to this array will allow
the puppet configured runner to pick them up properly.

this will also mimic the current production settings in
CommonSettings.php for gwtoolset.

Change-Id: I4755441d60c2e322b1a05f677049ef1bc90fdf08