repmgrd: in BDR mode, have each repmgrd monitor each node

This will cover both the case when an entire node including
repmgrd goes down, and when one PostgreSQL instance goes down
but repmgrd is still up (in which case only one of the repmgrds
will handle the failover).

repmgrd.c

@@ -665,6 +665,23 @@ calculate_elapsed(instr_time start_time)
 }
 
 
+const char *
+print_monitoring_state(MonitoringState monitoring_state)
+{
+	switch(monitoring_state)
+	{
+		case MS_NORMAL:
+			return "normal";
+
+		case MS_DEGRADED:
+			return "degraded";
+	}
+
+	/* should never reach here */
+	return "UNKNOWN";
+}
+
+
 static void
 close_connections()
 {
@@ -694,3 +711,5 @@ terminate(int retval)
 
 	exit(retval);
 }
+
+