Remove some skipTest in FT

Reactivate the next two FTs which have been skipped for a while:
* vnfm.test_tosca_vnf.VnfTestToscaCreateImageCreation/
  test_create_delete_vnf_tosca_no_monitoring:
  - should've been done when Change 634372 was merged
* tacker.tests.functional.vnfm.test_vnfm_param.VnfmTestParam/
  test_vnf_param_with_artifacts_image_tosca_template
  - BUG 1847188 is still open and no useful comments have been posted,
    while I made sure it works fine at the moment.

Note that the following one, which is the only FT [1] still being
explicitly skipped, cannot be reactivated. The downlink bandwidth
limitation seems to still exist.
* tacker.tests.functional.vnfm.test_tosca_vnfc.VnfTestToscaVNFC/
  test_create_delete_tosca_vnfc

[1] except k8s VIM-related ones

Change-Id: I99a2e43a564c4e8586f4427be8e62b62359c23a9

tacker/tests/functional/vnfm/test_tosca_vnf.py

@@ -13,9 +13,9 @@
 #    under the License.
 
 import time
-import unittest
 import yaml
 
+from glanceclient import exc
 from novaclient import exceptions
 from oslo_config import cfg
 
@@ -180,7 +180,6 @@ class VnfTestToscaCreateFlavorCreation(base.BaseTackerTest):
 
 class VnfTestToscaCreateImageCreation(base.BaseTackerTest):
 
-    @unittest.skip("Until BUG 1673099")
     def test_create_delete_vnf_tosca_no_monitoring(self):
         vnf_name = 'tosca_vnfd_with_auto_image'
         vnfd_file = 'sample-tosca-vnfd-image.yaml'
@@ -208,8 +207,8 @@ class VnfTestToscaCreateImageCreation(base.BaseTackerTest):
                 break
         self.assertIsNotNone(vdu_server)
         image_id = vdu_server.image["id"]
-        nova_images = self.novaclient().images
-        image = nova_images.get(image_id)
+        glanceclient = self.glanceclient()
+        image = glanceclient.images.get(image_id)
         self.assertIsNotNone(image)
         self.assertEqual(True, "VNFImage_image_func" in image.name)
         # Delete vnf_instance with vnf_id
@@ -223,5 +222,6 @@ class VnfTestToscaCreateImageCreation(base.BaseTackerTest):
         self.verify_vnf_crud_events(vnf_id, evt_constants.RES_EVT_DELETE,
                                     evt_constants.PENDING_DELETE, cnt=2)
 
-        self.assertRaises(exceptions.NotFound, nova_images.delete,
+        self.assertRaises(exc.HTTPNotFound,
+                          glanceclient.images.delete,
                           [image_id])

tacker/tests/functional/vnfm/test_vnfm_param.py

@@ -13,7 +13,6 @@
 #    under the License.
 
 import time
-import unittest
 import yaml
 
 from tacker.plugins.common import constants as evt_constants
@@ -158,7 +157,6 @@ class VnfmTestParam(base.BaseTackerTest):
             param_file='sample-tosca-vnf-values.yaml',
             vnf_name='test_vnf_with_parameters_tosca_template')
 
-    @unittest.skip("Until BUG 1847188")
     def test_vnf_param_with_artifacts_image_tosca_template(self):
         self._test_vnf_param_tosca_template(
             vnfd_name='cirros_vnfd_tosca_param_artifacts_image',