Add groups under topology_template in vnf_dict

This patch will include `groups` in `topology_template`
of `vnf_dict`.

Closes-Bug: #1929811
Change-Id: Ic05b58a2c4a605459822936b21a87a97b1899ce5

tacker/common/csar_utils.py

@@ -175,6 +175,8 @@ def _populate_flavour_data(tosca):
 
                 # get from lower-vnfd data
                 tpl_dict['topology_template'] = dict()
+                tpl_dict['topology_template']['groups'] = \
+                    tp.tpl.get('groups')
                 tpl_dict['topology_template']['policies'] = \
                     tp.tpl.get('policies')
                 tpl_dict['topology_template']['node_templates'] = \

tacker/tests/unit/vnflcm/fakes.py

@@ -1074,7 +1074,7 @@ def vnf_dict():
            ' flavour for Sample VNF\n\nimports:\n' + \
            '  - etsi_nfv_sol001_common_types.yaml\n' + \
            '  - etsi_nfv_sol001_vnfd_types.yaml\n\n' + \
-           'topology_template:\n  node_templates:\n' + \
+           'topology_template:\n  groups:\n  node_templates:\n' + \
            '    VNF:\n      type: nec.ossmano.VNF\n' + \
            '      properties:\n' + \
            '        flavour_description: A simple flavour\n' + \
@@ -1198,6 +1198,7 @@ def vnf_dict():
             }
         }
     }
+
     return vnf_dict
 
 

tacker/tests/unit/vnflcm/test_utils.py

@@ -57,3 +57,10 @@ class VnfLcmUtilsTestCase(base.TestCase):
         expected_flavour_description = 'A simple flavor'
         self.assertEqual(expected_flavour_description,
                          param_value['flavour_description'])
+
+    def test_topology_template_param_of_vnf_dict(self):
+        vnf_dict = fakes.vnf_dict()
+        vnf_keys = vnf_dict['vnfd']['attributes']['vnfd_simple']
+        self.assertIn('node_templates', vnf_keys)
+        self.assertIn('policies', vnf_keys)
+        self.assertIn('groups', vnf_keys)