Add test folder files and __init__ support files

devices/__init__.py

-from ._version import get_versions
-__version__ = get_versions()['version']
-del get_versions
+import pbr.version
+
+__version__ = pbr.version.VersionInfo(
+    'TangoStationControl').version_string()
+# from ._version import get_versions
+# __version__ = get_versions()['version']
+# del get_versions

devices/test/base.py

+# -*- coding: utf-8 -*-
+#
+# This file is part of the PCC project
+#
+#
+#
+# Distributed under the terms of the APACHE license.
+# See LICENSE.txt for more info.
+
+import testscenarios
+
+
+class BaseTestCase(testscenarios.WithScenarios):
+    """Test base class."""
+
+    def setUp(self):
+        super().setUp()
+
+
+class TestCase(BaseTestCase):
+    """Test case base class for all unit tests."""
+
+    def setUp(self):
+        super().setUp()

devices/test/sdp/test_sdp.py

+# -*- coding: utf-8 -*-
+#
+# This file is part of the PCC project
+#
+#
+#
+# Distributed under the terms of the APACHE license.
+# See LICENSE.txt for more info.
+
+from devices.SDP import SDP
+
+from devices.test import base
+
+
+class TestSDP(base.TestCase):
+
+    def setUp(self):
+        super(TestSDP, self).setUp()
+
+    def test_example(self):
+        self.assertEqual(5, 5)