Fix up verification that remote branches exist in sync_repo.
Fix up verification that remote branches exist in sync_repo.

rhafer/crowbar,rhafer/crowbar,toabctl/crowbar,toabctl/crowbar,aplanas/crowbar,nkrinner/crowbar,mmnelemane/crowbar,crowbar/crowbar,MaximilianMeister/crowbar,aplanas/crowbar,tserong/crowbar,dirkmueller/crowbar,SUSE-Cloud/crowbar,rsalevsky/crowbar,aspiers/crowbar,mmnelemane/crowbar,tserong/crowbar,vwallfahrer/crowbar,aspiers/crowbar,SUSE-Cloud/crowbar,dirkmueller/crowbar,MaximilianMeister/crowbar,crowbar/crowbar,rsalevsky/crowbar,rhafer/crowbar,vwallfahrer/crowbar,nkrinner/crowbar