Display optional information message on VM Backup tab

Author: Xavier Thevenot (Unlicensed)

Optional information message on backup policies tab

To display an optional information message on the Backup tab when the user edits a VM:

1. Edit the lang_en_US_custom file and set the message text:

   Disclaimer label

   {
       [...],
       "backupconfiguration.policy.disclaimer.label":"This is the backup policies optional information message text"
   }