MXS-1300: Add more MaxCtrl cluster tests

Added scripts that start two MaxScale on the same machine. This allows the
cluster synchronization commands to be tested locally.

test/maxscale_test.cnf

@@ -68,10 +68,6 @@ type=filter
 module=tee
 service=RW Split Hint Router
 
-[Debug Interface]
-type=service
-router=debugcli
-
 [CLI]
 type=service
 router=cli
@@ -100,12 +96,6 @@ service=RW Split Hint Router
 protocol=MySQLClient
 port=4009
 
-[Debug Listener]
-type=listener
-service=Debug Interface
-protocol=telnetd
-port=4442
-
 [CLI Listener]
 type=listener
 service=CLI