caches: fixed utils imports

rhodecode/lib/rc_cache/utils.py

@@ -27,8 +27,9 b' import threading'
 from dogpile.cache import CacheRegion
 
 import rhodecode
-from rhodecode.lib.utils import safe_bytes, sha1
-from rhodecode.lib.utils2 import safe_unicode, str2bool
+from rhodecode.lib.hash_utils import sha1
+from rhodecode.lib.type_utils import str2bool
+from rhodecode.lib.str_utils import safe_bytes
 from rhodecode.model.db import Session, CacheKey, IntegrityError
 
 from rhodecode.lib.rc_cache import cache_key_meta