Add scenario for automatic Galera upgrade

Change-Id: I080f169292d62f12bb3fa7496e3644a655ffe131
diff --git a/tcp_tests/managers/reclass_manager.py b/tcp_tests/managers/reclass_manager.py
new file mode 100644
index 0000000..0e1133c
--- /dev/null
+++ b/tcp_tests/managers/reclass_manager.py
@@ -0,0 +1,120 @@
+#    Copyright 2016 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
+#    under the License.
+
+from tcp_tests import logger
+from tcp_tests.managers.execute_commands import ExecuteCommandsMixin
+
+LOG = logger.logger
+
+
+class ReclassManager(ExecuteCommandsMixin):
+    """docstring for ReclassManager"""
+
+    __config = None
+    __underlay = None
+    reclass_tools_cmd = ". venv-reclass-tools/bin/activate; reclass-tools "
+    tgt = "cfg01"    # place where the reclass-tools installed
+
+    def __init__(self, config, underlay):
+        self.__config = config
+        self.__underlay = underlay
+
+        reclass_node = [node_name
+                        for node_name in self.__underlay.node_names()
+                        if self.tgt in node_name]
+        self.ssh = self.__underlay.remote(node_name=reclass_node[0])
+
+        super(ReclassManager, self).__init__(config=config, underlay=underlay)
+
+    def check_existence(self, key):
+        if key in self.ssh.check_call(
+                "{reclass_tools} get-key {key} /srv/salt/reclass/classes"
+                .format(
+                    reclass_tools=self.reclass_tools_cmd,
+                    key=key
+                )):
+            LOG.warning("({}) key already exists in reclass".format(key))
+            return True
+        return False
+
+    def add_key(self, key, value, short_path):
+        """
+        Shows alert if key exists
+
+        :param key: string, parameters which will be added or updated
+        :param value: value of key
+        :param short_path: path to reclass yaml file.
+            It takes into account default path where the reclass locates.
+            May look like cluster/*/cicd/control/leader.yml
+        :return: None
+        """
+        self.check_existence(key)
+        self.ssh.check_call(
+            "{reclass_tools} add-key {key} {value} \
+            /srv/salt/reclass/classes/{path}".format(
+                reclass_tools=self.reclass_tools_cmd,
+                key=key,
+                value=value,
+                path=short_path
+            ))
+
+    def add_bool_key(self, key, value, short_path):
+        """
+        Shows alert if key exists
+
+        :param key: string, parameters which will be added or updated
+        :param value: value of key
+        :param short_path: path to reclass yaml file.
+            It takes into account default path where the reclass locates.
+            May look like cluster/*/cicd/control/leader.yml
+        :return: None
+        """
+        self.check_existence(key)
+        self.ssh.check_call(
+            "{reclass_tools} add-bool-key {key} {value} \
+            /srv/salt/reclass/classes/{path}".format(
+                reclass_tools=self.reclass_tools_cmd,
+                key=key,
+                value=value,
+                path=short_path
+            ), raise_on_err=False)
+
+    def add_class(self, value, short_path):
+        """
+        Shows warning if class exists
+        :param value: role to add to 'classes' parameter in the reclass
+        :param short_path: path to reclass yaml file.
+            It takes into account default path where the reclass locates.
+            May look like cluster/*/cicd/control/leader.yml
+        :return: None
+        """
+        if value in self.ssh.check_call(
+                "{reclass_tools} get-key classes \
+                /srv/salt/reclass/classes/{path}".format(
+                    reclass_tools=self.reclass_tools_cmd,
+                    value=value,
+                    path=short_path
+                )):
+            LOG.warning("Class {} already exists in {}".format(
+                value,
+                short_path
+            ))
+
+        self.ssh.check_call(
+            "{reclass_tools} add-key classes {value} \
+            /srv/salt/reclass/classes/{path} --merge".format(
+                reclass_tools=self.reclass_tools_cmd,
+                value=value,
+                path=short_path
+            ))