Update 2.8 release notes for consistency
Update 2.8 release notes for consistency

Move documentation of new `set-members` command to the `ssh` section
and add a link to its documentation.

Change-Id: I2503d79b1759f256ca04823f046def2cf1245147

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