CA-137047: StorageXenMotion not offering all hosts in drop down menu
-Fixed Home server's commands to try to use both versions of migration when deciding to enable or disable the menu item

Signed-off-by: Gabor Apati-Nagy <gabor.apati-nagy@citrix.com>
 CA-137047: StorageXenMotion not offering all hosts in drop down menu
Some changes after code review

Signed-off-by: Gabor Apati-Nagy <gabor.apati-nagy@citrix.com>