Drop support in py2

Change-Id: I199ccdbf6684c1bc979428898a7d9094a7267f9d

mistral_tempest_tests/tests/api/v2/test_action_executions.py

@@ -12,8 +12,6 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import six
-
 from oslo_log import log as logging
 from oslo_serialization import jsonutils
 from tempest.lib import decorators
@@ -45,8 +43,7 @@ class ActionExecutionTestsV2(base.TestCase):
             except Exception as e:
                 LOG.exception(
                     'Exception raised when deleting '
-                    'action_executions %s, error message: %s.',
-                    action_ex, six.text_type(e)
+                    'action_executions %s, error message: %s.', action_ex, e
                 )
 
         self.client.action_executions = []

mistral_tempest_tests/tests/scenario/engine/actions/v2/test_multi_vim_authentication.py

@@ -16,8 +16,8 @@ import base64
 from keystoneclient import service_catalog as ks_service_catalog
 from oslo_serialization import jsonutils
 from oslo_utils import uuidutils
-from six.moves.urllib.parse import urlparse
 from tempest.lib import decorators
+from urllib.parse import urlparse
 
 from mistral_tempest_tests.tests import base
 

mistral_tempest_tests/tests/ssh_utils.py

@@ -15,7 +15,6 @@
 from os import path
 from oslo_log import log as logging
 import paramiko
-import six
 
 KEY_PATH = path.expanduser("~/.ssh/")
 LOG = logging.getLogger(__name__)
@@ -47,7 +46,7 @@ def _to_paramiko_private_key(private_key_filename, password=None):
 
 
 def _connect(host, username, password=None, pkey=None, proxy=None):
-    if isinstance(pkey, six.string_types):
+    if isinstance(pkey, str):
         pkey = _to_paramiko_private_key(pkey, password)
 
     LOG.debug('Creating SSH connection to %s', host)

requirements.txt

@@ -9,7 +9,6 @@ oslo.utils>=3.33.0 # Apache-2.0
 oslo.log>=3.36.0 # Apache-2.0
 oslo.serialization!=2.19.1,>=2.18.0 # Apache-2.0
 paramiko>=2.0.0 # LGPLv2.1+
-six>=1.10.0 # MIT
 mock>=2.0.0 # BSD
 tempest>=17.1.0 # Apache-2.0
 python-keystoneclient>=3.8.0 # Apache-2.0