Parallelize LUVerify{Cluster,Disks}
Parallelize LUVerify{Cluster,Disks}

These are two easy querying LUs which require shared access to all
nodes/instances.

Reviewed-by: iustinp


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