Vacuum the imported Gerrit2 database
Vacuum the imported Gerrit2 database

This way any garbage from the import process is cleaned out, leaving
a fully analyzed database that the query planner can generate good
plans from.  PostgreSQL recommends you do this nightly anyway, but
we should also ensure its correct after an import.

Signed-off-by: Shawn O. Pearce <f3ea74d906fa9fe97c1fef6bad9cb871485c7045@google.com>

ashang/aaron-gerrit,hdost/gerrit,jackminicloud/test,catrope/gerrit,CandyShop/gerrit,TonyChai24/test,bootstraponline-archive/gerrit-mirror,netroby/gerrit,thinkernel/gerrit,midnightradio/gerrit,keerath/gerrit_newssh,gcoders/gerrit,WANdisco/gerrit,WANdisco/gerrit,1yvT0s/gerrit,gcoders/gerrit,gracefullife/gerrit,Overruler/gerrit,bpollack/gerrit,Distrotech/gerrit,midnightradio/gerrit,renchaorevee/gerrit,duboisf/gerrit,GerritCodeReview/gerrit-attic,evanchueng/gerrit,rtyley/mini-git-server,cjh1/gerrit,midnightradio/gerrit,supriyantomaftuh/gerrit,WANdisco/gerrit,Saulis/gerrit,catrope/gerrit,Overruler/gerrit,renchaorevee/gerrit,MerritCR/merrit,thesamet/gerrit,zommarin/gerrit,gerrit-review/gerrit,dwhipstock/gerrit,MerritCR/merrit,duboisf/gerrit,quyixia/gerrit,zommarin/gerrit,thesamet/gerrit,Overruler/gerrit,bootstraponline-archive/gerrit-mirror,pkdevbox/gerrit,skurfuerst/gerrit,Overruler/gerrit,thinkernel/gerrit,basilgor/gerrit,qtproject/qtqa-gerrit,netroby/gerrit,Seinlin/gerrit,hdost/gerrit,Overruler/gerrit,cjh1/gerrit,catrope/gerrit,TonyChai24/test,dwhipstock/gerrit,m1kah/gerrit-contributions,ckamm/gerrit,midnightradio/gerrit,GerritCodeReview/gerrit,gerrit-review/gerrit,renchaorevee/gerrit,teamblueridge/gerrit,GerritCodeReview/gerrit,austinchic/Gerrit,TonyChai24/test,hdost/gerrit,cjh1/gerrit,bpollack/gerrit,hdost/gerrit,dwhipstock/gerrit,1yvT0s/gerrit,1yvT0s/gerrit,1yvT0s/gerrit,jackminicloud/test,GerritCodeReview/gerrit,dwhipstock/gerrit,thesamet/gerrit,bootstraponline-archive/gerrit-mirror,Distrotech/gerrit,anminhsu/gerrit,atdt/gerrit,qtproject/qtqa-gerrit,evanchueng/gerrit,jackminicloud/test,gracefullife/gerrit,basilgor/gerrit,pkdevbox/gerrit,GerritCodeReview/gerrit,WANdisco/gerrit,supriyantomaftuh/gerrit,dwhipstock/gerrit,Saulis/gerrit,jeblair/gerrit,renchaorevee/gerrit,Saulis/gerrit,jeblair/gerrit,Seinlin/gerrit,midnightradio/gerrit,ckamm/gerrit,evanchueng/gerrit,MerritCR/merrit,sudosurootdev/gerrit,thinkernel/gerrit,atdt/gerrit,zommarin/gerrit,Team-OctOS/host_gerrit,1yvT0s/gerrit,Seinlin/gerrit,WANdisco/gerrit,supriyantomaftuh/gerrit,Distrotech/gerrit,skurfuerst/gerrit,sudosurootdev/gerrit,supriyantomaftuh/gerrit,quyixia/gerrit,hdost/gerrit,makholm/gerrit-ceremony,pkdevbox/gerrit,bpollack/gerrit,zommarin/gerrit,makholm/gerrit-ceremony,basilgor/gerrit,Seinlin/gerrit,thesamet/gerrit,MerritCR/merrit,Team-OctOS/host_gerrit,GerritCodeReview/gerrit,gcoders/gerrit,basilgor/gerrit,Team-OctOS/host_gerrit,keerath/gerrit_newssh,jackminicloud/test,anminhsu/gerrit,makholm/gerrit-ceremony,ckamm/gerrit,WANdisco/gerrit,CandyShop/gerrit,gerrit-review/gerrit,Distrotech/gerrit,netroby/gerrit,thinkernel/gerrit,midnightradio/gerrit,joshuawilson/merrit,teamblueridge/gerrit,netroby/gerrit,CandyShop/gerrit,MerritCR/merrit,keerath/gerrit_newssh,thesamet/gerrit,Team-OctOS/host_gerrit,m1kah/gerrit-contributions,atdt/gerrit,austinchic/Gerrit,TonyChai24/test,joshuawilson/merrit,renchaorevee/gerrit,Seinlin/gerrit,gcoders/gerrit,ckamm/gerrit,atdt/gerrit,quyixia/gerrit,quyixia/gerrit,GerritCodeReview/gerrit,MerritCR/merrit,sudosurootdev/gerrit,gerrit-review/gerrit,WANdisco/gerrit,gerrit-review/gerrit,anminhsu/gerrit,anminhsu/gerrit,jeblair/gerrit,renchaorevee/gerrit,qtproject/qtqa-gerrit,renchaorevee/gerrit,Distrotech/gerrit,anminhsu/gerrit,jackminicloud/test,keerath/gerrit_newssh,bootstraponline-archive/gerrit-mirror,Distrotech/gerrit,gcoders/gerrit,Team-OctOS/host_gerrit,ashang/aaron-gerrit,GerritCodeReview/gerrit,skurfuerst/gerrit,netroby/gerrit,bpollack/gerrit,hdost/gerrit,Team-OctOS/host_gerrit,dwhipstock/gerrit,Saulis/gerrit,skurfuerst/gerrit,atdt/gerrit,anminhsu/gerrit,GerritCodeReview/gerrit-attic,qtproject/qtqa-gerrit,joshuawilson/merrit,thesamet/gerrit,bpollack/gerrit,TonyChai24/test,makholm/gerrit-ceremony,keerath/gerrit_newssh,supriyantomaftuh/gerrit,GerritCodeReview/gerrit,austinchic/Gerrit,dwhipstock/gerrit,evanchueng/gerrit,teamblueridge/gerrit,thinkernel/gerrit,ashang/aaron-gerrit,Seinlin/gerrit,TonyChai24/test,m1kah/gerrit-contributions,teamblueridge/gerrit,sudosurootdev/gerrit,quyixia/gerrit,rtyley/mini-git-server,GerritCodeReview/gerrit-attic,thinkernel/gerrit,thesamet/gerrit,pkdevbox/gerrit,teamblueridge/gerrit,ashang/aaron-gerrit,gerrit-review/gerrit,joshuawilson/merrit,ashang/aaron-gerrit,CandyShop/gerrit,MerritCR/merrit,thinkernel/gerrit,gerrit-review/gerrit,CandyShop/gerrit,Overruler/gerrit,quyixia/gerrit,qtproject/qtqa-gerrit,austinchic/Gerrit,evanchueng/gerrit,qtproject/qtqa-gerrit,qtproject/qtqa-gerrit,bootstraponline-archive/gerrit-mirror,joshuawilson/merrit,pkdevbox/gerrit,gracefullife/gerrit,joshuawilson/merrit,Distrotech/gerrit,jackminicloud/test,joshuawilson/merrit,gracefullife/gerrit,cjh1/gerrit,supriyantomaftuh/gerrit,netroby/gerrit,Saulis/gerrit,bpollack/gerrit,jackminicloud/test,Team-OctOS/host_gerrit,Saulis/gerrit,quyixia/gerrit,gcoders/gerrit,gracefullife/gerrit,anminhsu/gerrit,basilgor/gerrit,pkdevbox/gerrit,supriyantomaftuh/gerrit,gcoders/gerrit,Seinlin/gerrit,catrope/gerrit,MerritCR/merrit,zommarin/gerrit,joshuawilson/merrit,hdost/gerrit,TonyChai24/test,bootstraponline-archive/gerrit-mirror,m1kah/gerrit-contributions,duboisf/gerrit,duboisf/gerrit,sudosurootdev/gerrit,ckamm/gerrit,jeblair/gerrit,netroby/gerrit,pkdevbox/gerrit