MB-51052: Set special user to be same as memcachedUser for cbauth

Change-Id: Ic169a0bad0d506f76899162cc3ede8d264ed3c87
Reviewed-on: https://review.couchbase.org/c/ns_server/+/171287
Well-Formed: Build Bot <build@couchbase.com>
Tested-by: Build Bot <build@couchbase.com>
Tested-by: Navdeep S Boparai <navdeep.boparai@couchbase.com>
Reviewed-by: Dave Finlay <dave.finlay@couchbase.com>

src/menelaus_cbauth.erl

@@ -150,7 +150,6 @@ maybe_notify_cbauth(#state{rpc_processes = Processes,
     end.
 
 personalize_info(Label, Info) ->
-    SpecialUser = ns_config_auth:get_user(special) ++ Label,
     "htuabc-" ++ ReversedTrimmedLabel = lists:reverse(Label),
     MemcachedUser = [$@ | lists:reverse(ReversedTrimmedLabel)],
 
@@ -179,7 +178,7 @@ personalize_info(Label, Info) ->
                   end, Nodes),
 
     misc:update_proplist(Info,
-                         [{specialUser, erlang:list_to_binary(SpecialUser)},
+                         [{specialUser, erlang:list_to_binary(MemcachedUser)},
                           {nodes, NewNodes},
                           {tlsConfig, TLSConfig}]).