Initial commit with fixtures

- add fixtures for hardware and underlay
- add fuel-devops template tcpcloud-default.yaml

* Migration of fixtures is not finished yet
diff --git a/tcp_tests/helpers/metaclasses.py b/tcp_tests/helpers/metaclasses.py
new file mode 100644
index 0000000..6e1e79b
--- /dev/null
+++ b/tcp_tests/helpers/metaclasses.py
@@ -0,0 +1,27 @@
+#    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.
+
+
+class SingletonMeta(type):
+    """Metaclass for Singleton
+
+    Main goals: not need to implement __new__ in singleton classes
+    """
+    _instances = {}
+
+    def __call__(cls, *args, **kwargs):
+        if cls not in cls._instances:
+            cls._instances[cls] = super(
+                SingletonMeta, cls).__call__(*args, **kwargs)
+        return cls._instances[cls]