Make “gnt-cluster verify” exit 0 if there's no problem with instances.
Make “gnt-cluster verify” exit 0 if there's no problem with instances.

Reviewed-by: schreiberal



ganeti-github-testing/ganeti-test-1,apyrgio/ganeti,andir/ganeti,mbakke/ganeti,bitemyapp/ganeti,yiannist/ganeti,onponomarev/ganeti,yiannist/ganeti,andir/ganeti,ganeti/ganeti,dimara/ganeti,onponomarev/ganeti,grnet/snf-ganeti,grnet/snf-ganeti,apyrgio/ganeti,bitemyapp/ganeti,leshchevds/ganeti,mbakke/ganeti,mbakke/ganeti,ganeti/ganeti,ganeti/ganeti,ganeti-github-testing/ganeti-test-1,dimara/ganeti,apyrgio/snf-ganeti,andir/ganeti,yiannist/ganeti,apyrgio/snf-ganeti,leshchevds/ganeti,leshchevds/ganeti