[keycloak-dev] Reset admin password

[Stan Silvert]

We need a way to reset the admin password in case it is lost or 
hijacked.  The proposal is to do that through an operation on the 
keycloak-server-subsystem that only runs in "offline CLI" mode.

First, we currently allow you to delete the admin user.  Should we 
disallow that and make the master admin user permanent?

Should the new operation only work on the master admin password or can 
it be applied to any user in any realm?