Add test for MXS-1310

Added test that checks how the use of implicit databases is handled in
schemarouter.

maxscale-system-test/cnf/maxscale.cnf.template.mxs1310_implicit_db

@@ -0,0 +1,48 @@
+[maxscale]
+threads=###threads###
+log_info=1
+
+[MySQL Monitor]
+type=monitor
+module=mysqlmon
+###repl51###
+servers=server1,server2
+user=maxskysql
+passwd=skysql
+
+[Sharding router]
+type=service
+router=schemarouter
+servers=server1,server2
+user=maxskysql
+passwd=skysql
+auth_all_servers=1
+ignore_databases_regex=.*
+
+[Sharding Listener]
+type=listener
+service=Sharding router
+protocol=MySQLClient
+port=4006
+
+[CLI]
+type=service
+router=cli
+
+[CLI Listener]
+type=listener
+service=CLI
+protocol=maxscaled
+socket=default
+
+[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