set correct data center for vlan and subnet
return image after cloning
fixed NPE when getting datacenter for affinity group
allowed adding disks to server via alterVM api call
fixed high polling of operation status (added 15s sleep)
fixed getVolumes to not return OSDisks
delete os disk when server terminated
fixed toVolumeStatus to omit OSDisks
Merge pull request #8 from daniellemayne/develop

set correct data center for vlan and subnet based in affinity group mapping