Improve log message for better understanding

Sometimes designate central could not update the Pool configuration.
Very limited information is logged into the designate central logs
through which we can not find the root cause of failure.
This patch adds some more information into the log for better
understanding.

Change-Id: I26d36c15406436bb3b733d44c490a14e5ece39a6
Closes-Bug: 1835407
(cherry picked from commit e70af61dac)

designate/manage/pool.py

@@ -134,9 +134,10 @@ class PoolCommands(base.Commands):
                     try:
                         pool = self.central_api.get_pool(
                             self.context, xpool['id'])
-                    except Exception:
-                        LOG.critical("Bad ID Supplied for pool %s",
-                                     xpool['name'])
+                    except Exception as e:
+                        msg = ("Bad ID Supplied for pool. pool_id: "
+                            "%(pool)s message: %(res)s")
+                        LOG.critical(msg, {'pool': xpool['id'], 'res': e})
                         continue
                 else:
                     pool = self.central_api.find_pool(