pygrass: fix debug level (0->1)

git-svn-id: https://svn.osgeo.org/grass/grass/branches/releasebranch_7_0@62353 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/python/pygrass/modules/interface/module.py

@@ -400,7 +400,7 @@ class Module(object):
         #
         # print debug message
         #
-        self._msgr.debug(0, "Module.__call__(): %s" % (self.get_bash()))
+        self._msgr.debug(1, "Module.__call__(): %s" % (self.get_bash()))
 
         #
         # check if execute