[CBM] Administrator user is not backed up

What is the problem?
When we grab the users from the cluster we parse it into a struct, but that struct does not contain the admin field which specifies the Administrator users. This means the Administrator user is not backed up, which is contrary to the PRD.

*Note (Previously TBD) - *

Admin password restores – yes, by default, treated like every other user (no special case)

What is the solution?
Include the admin field in the struct so that it gets backed up.