MXS-701: Add binlogfilter test case

Added a simple test case that checks that the match and exclude parameters
work.

maxscale-system-test/cnf/maxscale.cnf.template.mxs701_binlog_filter

@@ -0,0 +1,33 @@
+[maxscale]
+threads=###threads###
+log_info=1
+
+[Binlog-Filter]
+type=filter
+module=binlogfilter
+match=/a[.]/
+exclude=/[.]t1/
+
+[Binlog-Service]
+type=service
+router=binlogrouter
+user=skysql
+password=skysql
+server_id=9993
+filters=Binlog-Filter
+
+[Binlog-Listener]
+type=listener
+service=Binlog-Service
+protocol=MySQLClient
+port=5306
+
+[CLI]
+type=service
+router=cli
+
+[CLI-Listener]
+type=listener
+service=CLI
+protocol=maxscaled
+socket=default