Pass raw password to users_auth

By passing the raw password deeper into the authentication code, it can be
used to verify the user can access some systems. Right now, this is not
required by the simple salted password comparison done in MaxScale.

server/modules/routing/debugcli/debugcmd.cc

@@ -2046,7 +2046,7 @@ static bool user_is_authorized(DCB* dcb)
     }
     else
     {
-        if (!admin_user_is_inet_admin(dcb->user))
+        if (!admin_user_is_inet_admin(dcb->user, nullptr))
         {
             rval = false;
         }