MXS-2313: Add rank test case

The test checks that the behavior of readwritesplit is as it should
be. The test still needs to be extended to cover readconnroute.

maxscale-system-test/cnf/maxscale.cnf.template.mxs2313_rank

@@ -0,0 +1,64 @@
+[maxscale]
+threads=###threads###
+log_info=1
+
+[server1]
+type=server
+address=###node_server_IP_1###
+port=###node_server_port_1###
+protocol=MySQLBackend
+
+[server2]
+type=server
+address=###node_server_IP_2###
+port=###node_server_port_2###
+protocol=MySQLBackend
+
+[server3]
+type=server
+address=###node_server_IP_3###
+port=###node_server_port_3###
+protocol=MySQLBackend
+
+[server4]
+type=server
+address=###node_server_IP_4###
+port=###node_server_port_4###
+protocol=MySQLBackend
+
+[MySQL-Monitor]
+type=monitor
+module=mysqlmon
+servers=server1,server2,server3,server4
+user=maxskysql
+password=skysql
+monitor_interval=1000
+
+[RW-Split-Router]
+type=service
+router=readwritesplit
+servers=server1,server2,server3,server4
+user=maxskysql
+password=skysql
+master_failure_mode=fail_on_write
+master_reconnection=true
+
+[Read-Connection-Router]
+type=service
+router=readconnroute
+router_options=running
+servers=server1,server2,server3,server4
+user=maxskysql
+password=skysql
+
+[RW-Split-Listener]
+type=listener
+service=RW-Split-Router
+protocol=MySQLClient
+port=4006
+
+[Read-Connection-Listener]
+type=listener
+service=Read-Connection-Router
+protocol=MySQLClient
+port=4009