Varnish module appears broken for v 2.1.5 and newer. 


I guess a header change broke the current varnish module. Using as is returned one metric: '----------------------------- = 0' which is obviously a part of the header.

My pull request makes the assumption of all metrics start with a alphabetic character, and that the connection termination string is always "Closing CLI connection" which seems to be the case up until the current version (3.0.3)