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/managers/k8s/cluster.py b/tcp_tests/managers/k8s/cluster.py
new file mode 100644
index 0000000..424ab32
--- /dev/null
+++ b/tcp_tests/managers/k8s/cluster.py
@@ -0,0 +1,110 @@
+#    Copyright 2017 Mirantis, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+
+
+import base64
+import ssl
+
+from k8sclient.client import api_client
+from k8sclient.client.apis import apiv_api
+from k8sclient.client.apis import apisextensionsvbeta_api
+from k8sclient.client.apis import apisbatchv_api
+
+from tcp_tests.managers.k8s.componentstatuses import \
+    K8sComponentStatusManager
+from tcp_tests.managers.k8s.daemonsets import K8sDaemonSetManager
+from tcp_tests.managers.k8s.deployments import K8sDeploymentManager
+from tcp_tests.managers.k8s.endpoints import K8sEndpointManager
+from tcp_tests.managers.k8s.events import K8sEventManager
+from tcp_tests.managers.k8s.horizontalpodautoscalers import \
+    K8sHorizontalPodAutoscalerManager
+from tcp_tests.managers.k8s.ingresses import K8sIngressManager
+from tcp_tests.managers.k8s.jobs import K8sJobManager
+from tcp_tests.managers.k8s.limitranges import K8sLimitRangeManager
+from tcp_tests.managers.k8s.namespaces import K8sNamespaceManager
+from tcp_tests.managers.k8s.nodes import K8sNodeManager
+from tcp_tests.managers.k8s.persistentvolumeclaims import \
+    K8sPersistentVolumeClaimManager
+from tcp_tests.managers.k8s.persistentvolumes import \
+    K8sPersistentVolumeManager
+from tcp_tests.managers.k8s.pods import K8sPodManager
+from tcp_tests.managers.k8s.replicationcontrollers import \
+    K8sReplicationControllerManager
+from tcp_tests.managers.k8s.resourcequotas import K8sResourceQuotaManager
+from tcp_tests.managers.k8s.secrets import K8sSecretManager
+from tcp_tests.managers.k8s.serviceaccounts import \
+    K8sServiceAccountManager
+from tcp_tests.managers.k8s.services import K8sServiceManager
+from tcp_tests.managers.k8s.replicasets import K8sReplicaSetManager
+
+
+class K8sCluster(object):
+    """docstring for K8sCluster"""
+
+    def __init__(self, schema="https", user=None, password=None,
+                 host='localhost', port='443', default_namespace='default'):
+        if user and password:
+            auth_string = '%s:%s' % (user, password)
+            auth = base64.encodestring(auth_string.encode()).decode()[:-1]
+            auth = "Basic {}".format(auth)
+            self._client = api_client.ApiClient(
+                '{schema}://{host}:{port}/'.format(
+                    schema=schema, host=host, port=port))
+            self._client.set_default_header('Authorization', auth)
+            restcli_impl = self._client.RESTClient.IMPL
+            restcli_impl.ssl_pool_manager.connection_pool_kw['cert_reqs'] = \
+                ssl.CERT_NONE
+
+        else:
+            self._client = api_client.ApiClient(
+                '{schema}://{host}:{port}/'.format(
+                    schema=schema, host=host, port=port))
+        self._api = apiv_api.ApivApi(self._client)
+        self._bapi = apisbatchv_api.ApisbatchvApi(self._client)
+        self._eapi = apisextensionsvbeta_api.ApisextensionsvbetaApi(
+            self._client)
+        self._default_namespace = default_namespace
+
+        self.nodes = K8sNodeManager(self._api, self._default_namespace)
+        self.pods = K8sPodManager(self._api, self._default_namespace)
+        self.endpoints = K8sEndpointManager(self._api, self._default_namespace)
+        self.namespaces = K8sNamespaceManager(self._api,
+                                              self._default_namespace)
+        self.services = K8sServiceManager(self._api, self._default_namespace)
+        self.serviceaccounts = K8sServiceAccountManager(
+            self._api, self._default_namespace)
+        self.secrets = K8sSecretManager(self._api, self._default_namespace)
+        self.events = K8sEventManager(self._api, self._default_namespace)
+        self.limitranges = K8sLimitRangeManager(self._api,
+                                                self._default_namespace)
+        self.jobs = K8sJobManager(self._bapi, self._default_namespace)
+        self.daemonsets = K8sDaemonSetManager(self._eapi,
+                                              self._default_namespace)
+        self.ingresses = K8sIngressManager(self._eapi, self._default_namespace)
+        self.deployments = K8sDeploymentManager(self._eapi,
+                                                self._default_namespace)
+        self.horizontalpodautoscalers = K8sHorizontalPodAutoscalerManager(
+            self._eapi, self._default_namespace)
+        self.componentstatuses = K8sComponentStatusManager(
+            self._api, self._default_namespace)
+        self.resourcequotas = K8sResourceQuotaManager(
+            self._api, self._default_namespace)
+        self.replicationcontrollers = K8sReplicationControllerManager(
+            self._api, self._default_namespace)
+        self.pvolumeclaims = K8sPersistentVolumeClaimManager(
+            self._api, self._default_namespace)
+        self.pvolumes = K8sPersistentVolumeManager(
+            self._api, self._default_namespace)
+        self.replicasets = K8sReplicaSetManager(
+            self._eapi, self._default_namespace
+        )