Merge from develop

Merge from develop

server/core/dbusers.c

@@ -1248,7 +1248,7 @@ getUsers(SERVICE *service, USERS *users)
 		LOGIF(LE, (skygw_log_write_flush(
 			LOGFILE_ERROR,
 			"Error : Unable to get user data from backend database "
-			"for service [%s]. No available servers.",
+			"for service [%s]. Failed to connect to any of the backend databases.",
 			service->name)));
 		mysql_close(con);
 		return -1;

server/core/externcmd.c

@@ -114,6 +114,7 @@ EXTERNCMD* externcmd_allocate(char* argstr)
 	    externcmd_free(cmd);
 	    return NULL;
 	}
+    skygw_log_write(LT, "Executing script %s.", cmd->parameters[0]);
     }
     return cmd;
 }