Obfuscate Token in Debug Mode

Our client prints out the users token in each curl request.
These debug statements than get passed up to our other services
that use the client if on debug mode so we could be printing the
token in log files. We needed to remove that.

Change-Id: I6dd6c0f171f03f6715abd59b26e9f59de5b0bb9b

monascaclient/common/http.py

@@ -127,6 +127,8 @@ class HTTPClient(object):
         curl = ['curl -i -X %s' % method]
 
         for (key, value) in kwargs['headers'].items():
+            if key == 'X-Auth-Token':
+                value = '*****'
             header = '-H \'%s: %s\'' % (strutils.safe_decode(key),
                                         strutils.safe_decode(value))
             curl.append(header)