[gnuoy,trivial] Pre-release charmhelper sync

tests/charmhelpers/contrib/amulet/utils.py

@@ -89,7 +89,11 @@ class AmuletUtils(object):
     def _get_config(self, unit, filename):
         """Get a ConfigParser object for parsing a unit's config file."""
         file_contents = unit.file_contents(filename)
-        config = ConfigParser.ConfigParser()
+
+        # NOTE(beisner):  by default, ConfigParser does not handle options
+        # with no value, such as the flags used in the mysql my.cnf file.
+        # https://bugs.python.org/issue7005
+        config = ConfigParser.ConfigParser(allow_no_value=True)
         config.readfp(io.StringIO(file_contents))
         return config