Announce new ITS plugins in Gerrit 2.9 release notes
Announce new ITS plugins in Gerrit 2.9 release notes

Add a warning to the Gerrit 2.9 release notes that there are new
plugins for the integration with Bugzilla, Jira and RTC and that the
old plugins are deprecated with Gerrit 2.9.

Also describe the new features of the ITS plugins in the release notes.

Change-Id: Ie9803de95833b0f6c5b01aead7d22039dc33e746
Signed-off-by: Edwin Kempin <b444e279ad95fdef4fbdd82c813b624595df204a@sap.com>

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