Use management queue for parallelized management operations

When IO queues are used for parallelized management operations,
e.g. changing cleaning policy, a deadlock may occur due to global
metadata lock interfering with taking request from IO queue,
as they might be run on the same thread. As a workaround using
a management queue specifically for such operations eliminates
this problem.

Signed-off-by: Rafal Stefanowski <rafal.stefanowski@huawei.com>

src/mngt/ocf_mngt_cache.c

@@ -672,7 +672,7 @@ static void ocf_mngt_rebuild_metadata(ocf_cache_t cache,
 	result = ocf_parallelize_create(&parallelize, cache,
 			OCF_MNGT_REBUILD_METADATA_SHARDS_CNT,
 			sizeof(*context), ocf_mngt_rebuild_metadata_handle,
-			ocf_mngt_rebuild_metadata_finish);
+			ocf_mngt_rebuild_metadata_finish, false);
         if (result) {
                 cmpl(priv, result);
                 return;