Use unittest.mock instead of mock

The mock third party library was needed for mock support in py2
runtimes. Since we now only support py36 and later, we can use the
standard lib unittest.mock module instead.

Change-Id: I4e885ce16080d302552217280b88b9dee3839555

lower-constraints.txt

@@ -57,7 +57,6 @@ Mako==1.0.7
 MarkupSafe==1.1.0
 mccabe==0.5.3
 microversion-parse==0.2.1
-mock==2.0.0
 monotonic==1.5
 mox3==0.26.0
 msgpack==0.6.1

sahara_plugin_vanilla/tests/unit/plugins/vanilla/hadoop2/test_config_helper.py

@@ -13,7 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import mock
+from unittest import mock
+
 from oslo_config import cfg
 
 from sahara.plugins import exceptions as ex

sahara_plugin_vanilla/tests/unit/plugins/vanilla/hadoop2/test_edp_engine.py

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import mock
+from unittest import mock
 
 from sahara.plugins import base as pb
 from sahara.plugins import exceptions as ex

sahara_plugin_vanilla/tests/unit/plugins/vanilla/hadoop2/test_oozie_helper.py

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import mock
+from unittest import mock
 
 from sahara_plugin_vanilla.plugins.vanilla.hadoop2 import oozie_helper
 from sahara_plugin_vanilla.tests.unit import base

sahara_plugin_vanilla/tests/unit/plugins/vanilla/hadoop2/test_plugin.py

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import mock
+from unittest import mock
 
 from sahara.plugins import base as pb
 from sahara.plugins import conductor

sahara_plugin_vanilla/tests/unit/plugins/vanilla/hadoop2/test_recommendation_utils.py

@@ -13,7 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import mock
+from unittest import mock
+
 import testtools
 
 from sahara_plugin_vanilla.plugins.vanilla.hadoop2 import recommendations_utils

sahara_plugin_vanilla/tests/unit/plugins/vanilla/hadoop2/test_run_scripts.py

@@ -14,7 +14,7 @@
 # limitations under the License.
 
 from functools import wraps
-import mock
+from unittest import mock
 
 
 def mock_event_wrapper(*args, **kwargs):

sahara_plugin_vanilla/tests/unit/plugins/vanilla/hadoop2/test_scaling.py

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import mock
+from unittest import mock
 
 from sahara_plugin_vanilla.i18n import _
 from sahara_plugin_vanilla.plugins.vanilla.hadoop2 import config_helper

sahara_plugin_vanilla/tests/unit/plugins/vanilla/hadoop2/test_starting_scripts.py

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import mock
+from unittest import mock
 
 from sahara_plugin_vanilla.plugins.vanilla.hadoop2 import starting_scripts
 from sahara_plugin_vanilla.tests.unit import base

sahara_plugin_vanilla/tests/unit/plugins/vanilla/hadoop2/test_utils.py

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import mock
+from unittest import mock
 
 from sahara.plugins import utils
 from sahara_plugin_vanilla.plugins.vanilla.hadoop2 import utils as u

sahara_plugin_vanilla/tests/unit/plugins/vanilla/test_confighints_helper.py

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import mock
+from unittest import mock
 
 from sahara_plugin_vanilla.plugins.vanilla import confighints_helper
 from sahara_plugin_vanilla.tests.unit import base as sahara_base

sahara_plugin_vanilla/tests/unit/plugins/vanilla/v2_7_1/test_config_helper.py

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import mock
+from unittest import mock
 
 from sahara.plugins import provisioning as p
 from sahara_plugin_vanilla.plugins.vanilla.v2_7_1 import config_helper

sahara_plugin_vanilla/tests/unit/plugins/vanilla/v2_7_1/test_edp_engine.py

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import mock
+from unittest import mock
 
 from sahara.plugins import edp
 from sahara_plugin_vanilla.plugins.vanilla.v2_7_1 import edp_engine

sahara_plugin_vanilla/tests/unit/plugins/vanilla/v2_7_1/test_versionhandler.py

@@ -13,7 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import mock
+from unittest import mock
+
 import six
 import testtools
 

sahara_plugin_vanilla/tests/unit/plugins/vanilla/v2_7_5/test_config_helper.py

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import mock
+from unittest import mock
 
 from sahara.plugins import provisioning as p
 from sahara_plugin_vanilla.plugins.vanilla.v2_7_5 import config_helper

sahara_plugin_vanilla/tests/unit/plugins/vanilla/v2_7_5/test_edp_engine.py

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import mock
+from unittest import mock
 
 from sahara.plugins import edp
 from sahara_plugin_vanilla.plugins.vanilla.v2_7_5 import edp_engine

sahara_plugin_vanilla/tests/unit/plugins/vanilla/v2_7_5/test_versionhandler.py

@@ -13,7 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import mock
+from unittest import mock
+
 import six
 import testtools
 

sahara_plugin_vanilla/tests/unit/plugins/vanilla/v2_8_2/test_config_helper.py

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import mock
+from unittest import mock
 
 from sahara.plugins import provisioning as p
 from sahara_plugin_vanilla.plugins.vanilla.v2_8_2 import config_helper

sahara_plugin_vanilla/tests/unit/plugins/vanilla/v2_8_2/test_edp_engine.py

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import mock
+from unittest import mock
 
 from sahara.plugins import edp
 from sahara.tests.unit import base as sahara_base

sahara_plugin_vanilla/tests/unit/plugins/vanilla/v2_8_2/test_versionhandler.py

@@ -13,7 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import mock
+from unittest import mock
+
 import six
 import testtools
 

test-requirements.txt

@@ -9,7 +9,6 @@ bashate>=0.5.1 # Apache-2.0
 coverage!=4.4,>=4.0 # Apache-2.0
 doc8>=0.6.0 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/BSD
-mock>=2.0.0 # BSD
 oslotest>=3.2.0 # Apache-2.0
 stestr>=1.0.0 # Apache-2.0
 pylint==1.4.5 # GPLv2