Added 'k8s_deployed' fixture

Created a separate fixture for Kubernetes deployment.
Modified existing k8s related fixtures / tests so they
use it now and updated templates with k8s environments.

Also this patch includes few minor changes:

 * removed unused fixture 'deploy_openstack' which
   was a full copy of 'openstack_deployed' fixture;
 * removed unused modules imports;
 * fixed typos and docstrings.

Change-Id: Ic35551f3e52913cede753b92e7d5a81f54570b01
Reviewed-on: https://review.gerrithub.io/365234
Reviewed-by: <vrovachev@mirantis.com>
Reviewed-by: Dennis Dmitriev <dis.xcom@gmail.com>
Tested-by: Tatyanka Leontovich <tleontovich@mirantis.com>
diff --git a/tcp_tests/tests/system/conftest.py b/tcp_tests/tests/system/conftest.py
index 89dfc3d..015c7ed 100644
--- a/tcp_tests/tests/system/conftest.py
+++ b/tcp_tests/tests/system/conftest.py
@@ -24,6 +24,7 @@
 from tcp_tests.fixtures.stacklight_fixtures import *
 from tcp_tests.fixtures.virtlet_fixtures import *
 from tcp_tests.fixtures.virtlet_ceph_fixtures import *
+from tcp_tests.fixtures.k8s_fixtures import *
 
 
 __all__ = sorted([  # sort for documentation
@@ -52,6 +53,9 @@
     # stacklight_fixtures
     'sl_actions',
     'sl_deployed',
+    # k8s fixtures
+    'k8s_actions',
+    'k8s_deployed',
     'virtlet_actions',
     'virtlet_deployed',
     'virtlet_ceph_actions',
diff --git a/tcp_tests/tests/system/test_install_k8s.py b/tcp_tests/tests/system/test_install_k8s.py
index 742ecc6..36f42b8 100644
--- a/tcp_tests/tests/system/test_install_k8s.py
+++ b/tcp_tests/tests/system/test_install_k8s.py
@@ -11,13 +11,9 @@
 #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 #    License for the specific language governing permissions and limitations
 #    under the License.
-import copy
-import time
 
 import pytest
 
-from tcp_tests import settings
-from tcp_tests.helpers import ext
 from tcp_tests import logger
 
 LOG = logger.logger
@@ -25,37 +21,31 @@
 
 @pytest.mark.deploy
 class Testk8sInstall(object):
-    """Test class for testing mcp10 vxlan deploy"""
+    """Test class for testing Kubernetes deploy"""
 
-    #salt_cmd = 'salt -l debug '  # For debug output
-    #salt_call_cmd = 'salt-call -l debug '  # For debug output
-    salt_cmd = 'salt --hard-crash --state-output=mixed --state-verbose=False '  # For cause only output
-    salt_call_cmd = 'salt-call --hard-crash --state-output=mixed --state-verbose=False '  # For cause only output
-    #salt_cmd = 'salt --state-output=terse --state-verbose=False '  # For reduced output
-    #salt_call_cmd = 'salt-call --state-output=terse --state-verbose=False '  # For reduced output
-
-    # @pytest.mark.snapshot_needed
-    # @pytest.mark.fail_snapshot
-    def test_k8s_install(self, underlay, sl_deployed, openstack_deployed,
-                                     show_step):
-        """Test for deploying an mcp environment and check it
+    @pytest.mark.fail_snapshot
+    def test_k8s_install(self, sl_deployed, k8s_deployed):
+        """Test for deploying MCP environment with k8s+stacklight and check it
 
         Scenario:
             1. Prepare salt on hosts
             2. Setup controller nodes
             3. Setup compute nodes
             4. Setup stack light nodes
+            5. Setup Kubernetes cluster
 
         """
         LOG.info("*************** DONE **************")
 
-    def test_only_k8s_install(self, underlay, openstack_deployed, show_step):
-        """Test for deploying an mcp environment and check it
+    @pytest.mark.fail_snapshot
+    def test_only_k8s_install(self, k8s_deployed):
+        """Test for deploying MCP environment with k8s and check it
 
         Scenario:
             1. Prepare salt on hosts
             2. Setup controller nodes
             3. Setup compute nodes
+            4. Setup Kubernetes cluster
 
         """
         LOG.info("*************** DONE **************")
\ No newline at end of file