logging: use just func names for logs instead of objects with memory address (doesn't give any valueable info)

vcsserver/lib/rc_cache/utils.py

@@ -51,7 +51,7 b' class RhodeCodeCacheRegion(CacheRegion):'
         def get_or_create_for_user_func(key_generator, user_func, *arg, **kw):
 
             if not condition:
-                log.debug('Calling un-cached func:%s', user_func)
+                log.debug('Calling un-cached func:%s', user_func.func_name)
                 return user_func(*arg, **kw)
 
             key = key_generator(*arg, **kw)
@@ -59,7 +59,7 b' class RhodeCodeCacheRegion(CacheRegion):'
             timeout = expiration_time() if expiration_time_is_callable \
                 else expiration_time
 
-            log.debug('Calling cached fn:%s', user_func)
+            log.debug('Calling cached fn:%s', user_func.func_name)
             return self.get_or_create(key, user_func, timeout, should_cache_fn, (arg, kw))
 
         def cache_decorator(user_func):