remove unicode casting for syslog line, fixes #804

Causes a syslog emergency broadcast message to be displayed in certain
circumstances, like when using Python 2.6.5 on CentOS 5.x.

Since hostnames in unicode aren't valid, and we don't currently support
unicode host tags, this should be safe to remove.

checks/collector.py

@@ -388,7 +388,7 @@ def _build_payload(self, start_event=True):
 
             # Log the metadata on the first run
             if self._is_first_run():
-                log.info(u"Hostnames: %s, tags: %s" % (repr(self.metadata_cache), payload['host-tags']))
+                log.info("Hostnames: %s, tags: %s" % (repr(self.metadata_cache), payload['host-tags']))
 
         return payload