#428 Add new variables in MyHGM->status to track server metrics

include/MySQL_HostGroups_Manager.h

@@ -108,6 +108,9 @@ class MySQL_HostGroups_Manager {
 		unsigned long client_connections_aborted;
 		unsigned long client_connections_created;
 		int client_connections;
+		unsigned long server_connections_aborted;
+		unsigned long server_connections_created;
+		unsigned long server_connections_connected;
 		unsigned long myconnpoll_get;
 		unsigned long myconnpoll_get_ok;
 		unsigned long myconnpoll_get_ping;

lib/MySQL_HostGroups_Manager.cpp

@@ -224,6 +224,9 @@ MySQL_HostGroups_Manager::MySQL_HostGroups_Manager() {
 	status.client_connections=0;
 	status.client_connections_aborted=0;
 	status.client_connections_created=0;
+	status.server_connections_connected=0;
+	status.server_connections_aborted=0;
+	status.server_connections_created=0;
 	status.myconnpoll_get=0;
 	status.myconnpoll_get_ok=0;
 	status.myconnpoll_get_ping=0;