Adds local fake_instance

fake_instance is used by the unit tests in order
to generate fake intances for testing purposes.
This commit adds a simpler, local fake_instance module
and replaces the usage of the nova fake_instance module.

hyperv/tests/unit/test_imagecache.py

@@ -20,7 +20,7 @@ from oslo_config import cfg
 
 from nova import exception
 from nova import objects
-from nova.tests.unit import fake_instance
+from hyperv.tests import fake_instance
 from nova.tests.unit.objects import test_flavor
 from hyperv.nova import constants
 from hyperv.nova import imagecache

hyperv/tests/unit/test_livemigrationops.py

@@ -16,7 +16,7 @@
 import mock
 from oslo_config import cfg
 
-from nova.tests.unit import fake_instance
+from hyperv.tests import fake_instance
 from hyperv.nova import livemigrationops
 from hyperv.nova import vmutils
 from hyperv.tests.unit import test_base

hyperv/tests/unit/test_migrationops.py

@@ -14,7 +14,7 @@
 
 import mock
 
-from nova.tests.unit import fake_instance
+from hyperv.tests import fake_instance
 from hyperv.nova import migrationops
 from hyperv.nova import vmutils
 from hyperv.tests.unit import test_base

hyperv/tests/unit/test_snapshotops.py

@@ -18,7 +18,7 @@ import os
 import mock
 
 from nova.compute import task_states
-from nova.tests.unit import fake_instance
+from hyperv.tests import fake_instance
 from hyperv.nova import snapshotops
 from hyperv.tests.unit import test_base
 

hyperv/tests/unit/test_vmops.py

@@ -21,7 +21,7 @@ from oslo_config import cfg
 from oslo_utils import units
 
 from nova import exception
-from nova.tests.unit import fake_instance
+from hyperv.tests import fake_instance
 from hyperv.nova import constants
 from hyperv.nova import vmops
 from hyperv.nova import vmutils