Set appropriate log levels for some logs

Some debug level logs are being logged as error and floods the log file.
Promptly demoting the log level from error to debug.

Change-Id: I82bb2630a6e300ddcd4541741fabc17d2b43cd33
Closes-Bug: #1769211

contrail-opserver/opserver.py

@@ -2057,9 +2057,8 @@ def dyn_list_http_get(self, tables):
         if uve_type in UVE_MAP:
             uve_tbl = UVE_MAP[uve_type]
 
-        self._logger.error("before res list is %s" %uve_type)
         res_list = self.get_resource_list_from_uve_type(uve_type)
-        self._logger.error("res list is %s" %res_list)
+        self._logger.debug("resource list for %s is %s" %(uve_type, res_list))
         req = bottle.request.query
         try:
             filters = OpServer._uve_filter_set(req)