utils/log: adjust level for CGgroups logger

devlib's CGgroups module logs things at INFO level. The information it
logs is too detailed for what WA considers "INFO", and should be logged
at DEBUG level instead.

wa/utils/log.py

@@ -74,6 +74,9 @@ def init(verbosity=logging.INFO, color=True, indent_with=4,
     if not debug:
         logging.raiseExceptions = False
 
+    logger = logging.getLogger('CGroups')
+    logger.info = logger.debug
+
 
 def set_level(level):
     _console_handler.setLevel(level)