Also test that migration tags are identified correctly
Also test that migration tags are identified correctly

The specification says, that if a cluster tag starts htools:migration:x
then node tags starting with x: indicate migration restrictions. Note
the additional colon. To test for this, add on a cluster with cluster
tag 'htools:migration:hv' a tag starting with 'hv' that is not a migration
tag.

Signed-off-by: Klaus Aehlig <4ce51de36d9068cd7db2eec1151e0f3f95419008@google.com>
Reviewed-by: Hrvoje Ribicic <be5828fca31f89218048bec4189e30a581aa65da@google.com>

apyrgio/ganeti,mbakke/ganeti,yiannist/ganeti,andir/ganeti,onponomarev/ganeti,yiannist/ganeti,dimara/ganeti,leshchevds/ganeti,andir/ganeti,dimara/ganeti,ganeti/ganeti,leshchevds/ganeti,grnet/snf-ganeti,onponomarev/ganeti,ganeti/ganeti,ganeti/ganeti,leshchevds/ganeti,grnet/snf-ganeti,andir/ganeti,bitemyapp/ganeti,mbakke/ganeti,mbakke/ganeti,yiannist/ganeti,bitemyapp/ganeti,apyrgio/ganeti