Correct template comment. XSCONTAINERRSAPUB is required for container management

Signed-off-by: Robert Breker <[email protected]>

Author: Robert Breker

src/xscontainer/data/cloud-config.template

@@ -4,8 +4,8 @@ hostname: %XSVMNAMETOHOSTNAME%
 ssh_authorized_keys:
   # - ssh-rsa <Your public key>
   # The following entry will automatically be replaced with a public key
-  # generated by XenServer's container enablement. If the key-entry exists,
-  # monitoring will automatically be enabled for the VM.
+  # generated by XenServer's container management. The key-entry must exist,
+  # in order to enable container management for this VM.
   - ssh-rsa %XSCONTAINERRSAPUB%
 coreos:
   units: