[libyang-python-tests/test_sonic_yang.py]: Allow extra tables in conf…

…ig for the test.

Changes:
1.) All the YANG models are not merged yet, so test config has tables with no YANG,
allow this scenario for tests as of now.

src/sonic-yang-mgmt/tests/libyang-python-tests/test_sonic_yang.py

@@ -273,7 +273,8 @@ def test_xlate_rev_xlate(self):
 
         syc.loadYangModel()
 
-        syc.load_data(json.loads(jIn), allowExtraTables=False)
+        # Allow additional tabbles in config, since all yang models are not merged #
+        syc.load_data(json.loads(jIn))
 
         syc.get_data()