Make singleusergroup a core plugin
Make singleusergroup a core plugin

This plugin might be useful for a lot of users.  Make it a core plugin
so it gets included in the distributed war file and offered to the user
during installation.

Change-Id: Ic69e01018d11b1989b36150584b104a98d48ea99

gcoders/gerrit,renchaorevee/gerrit,WANdisco/gerrit,anminhsu/gerrit,thesamet/gerrit,joshuawilson/merrit,pkdevbox/gerrit,Team-OctOS/host_gerrit,Seinlin/gerrit,Seinlin/gerrit,netroby/gerrit,TonyChai24/test,qtproject/qtqa-gerrit,quyixia/gerrit,Distrotech/gerrit,qtproject/qtqa-gerrit,pkdevbox/gerrit,jackminicloud/test,gcoders/gerrit,hdost/gerrit,gcoders/gerrit,Distrotech/gerrit,Saulis/gerrit,Team-OctOS/host_gerrit,gerrit-review/gerrit,WANdisco/gerrit,supriyantomaftuh/gerrit,Overruler/gerrit,netroby/gerrit,gcoders/gerrit,GerritCodeReview/gerrit,gerrit-review/gerrit,hdost/gerrit,GerritCodeReview/gerrit,midnightradio/gerrit,supriyantomaftuh/gerrit,MerritCR/merrit,anminhsu/gerrit,WANdisco/gerrit,Distrotech/gerrit,Team-OctOS/host_gerrit,MerritCR/merrit,renchaorevee/gerrit,GerritCodeReview/gerrit,pkdevbox/gerrit,quyixia/gerrit,TonyChai24/test,renchaorevee/gerrit,Saulis/gerrit,gcoders/gerrit,WANdisco/gerrit,TonyChai24/test,thinkernel/gerrit,thinkernel/gerrit,pkdevbox/gerrit,gerrit-review/gerrit,midnightradio/gerrit,joshuawilson/merrit,joshuawilson/merrit,WANdisco/gerrit,Saulis/gerrit,quyixia/gerrit,quyixia/gerrit,gerrit-review/gerrit,dwhipstock/gerrit,anminhsu/gerrit,thesamet/gerrit,TonyChai24/test,TonyChai24/test,Distrotech/gerrit,qtproject/qtqa-gerrit,dwhipstock/gerrit,hdost/gerrit,dwhipstock/gerrit,TonyChai24/test,hdost/gerrit,thesamet/gerrit,Overruler/gerrit,dwhipstock/gerrit,joshuawilson/merrit,anminhsu/gerrit,quyixia/gerrit,renchaorevee/gerrit,anminhsu/gerrit,supriyantomaftuh/gerrit,thinkernel/gerrit,netroby/gerrit,thinkernel/gerrit,netroby/gerrit,TonyChai24/test,qtproject/qtqa-gerrit,MerritCR/merrit,Saulis/gerrit,gcoders/gerrit,GerritCodeReview/gerrit,supriyantomaftuh/gerrit,thinkernel/gerrit,qtproject/qtqa-gerrit,hdost/gerrit,netroby/gerrit,Overruler/gerrit,supriyantomaftuh/gerrit,Team-OctOS/host_gerrit,renchaorevee/gerrit,netroby/gerrit,joshuawilson/merrit,quyixia/gerrit,jackminicloud/test,pkdevbox/gerrit,joshuawilson/merrit,midnightradio/gerrit,gerrit-review/gerrit,MerritCR/merrit,Team-OctOS/host_gerrit,thesamet/gerrit,gcoders/gerrit,pkdevbox/gerrit,jackminicloud/test,dwhipstock/gerrit,WANdisco/gerrit,pkdevbox/gerrit,hdost/gerrit,Seinlin/gerrit,jackminicloud/test,hdost/gerrit,jackminicloud/test,Overruler/gerrit,netroby/gerrit,gerrit-review/gerrit,thesamet/gerrit,dwhipstock/gerrit,Distrotech/gerrit,gerrit-review/gerrit,WANdisco/gerrit,anminhsu/gerrit,Seinlin/gerrit,Team-OctOS/host_gerrit,Overruler/gerrit,qtproject/qtqa-gerrit,supriyantomaftuh/gerrit,jackminicloud/test,renchaorevee/gerrit,renchaorevee/gerrit,midnightradio/gerrit,thinkernel/gerrit,Seinlin/gerrit,Distrotech/gerrit,Distrotech/gerrit,midnightradio/gerrit,anminhsu/gerrit,MerritCR/merrit,supriyantomaftuh/gerrit,Team-OctOS/host_gerrit,Saulis/gerrit,joshuawilson/merrit,Saulis/gerrit,midnightradio/gerrit,Overruler/gerrit,dwhipstock/gerrit,GerritCodeReview/gerrit,Seinlin/gerrit,GerritCodeReview/gerrit,joshuawilson/merrit,jackminicloud/test,GerritCodeReview/gerrit,MerritCR/merrit,MerritCR/merrit,thinkernel/gerrit,MerritCR/merrit,thesamet/gerrit,thesamet/gerrit,Seinlin/gerrit,GerritCodeReview/gerrit,qtproject/qtqa-gerrit,quyixia/gerrit