pyocf: add get_default_queue to core object

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>

tests/functional/pyocf/types/core.py

@@ -1,5 +1,5 @@
 #
-# Copyright(c) 2019-2021 Intel Corporation
+# Copyright(c) 2019-2022 Intel Corporation
 # SPDX-License-Identifier: BSD-3-Clause
 #
 
@@ -124,6 +124,9 @@ class Core:
             volume, queue.handle, addr, length, direction, io_class, flags)
         return Io.from_pointer(io)
 
+    def get_default_queue(self):
+        return self.cache.get_default_queue()
+
     def get_stats(self):
         core_info = CoreInfo()
         usage = UsageStats()