Add implementation of SDL in python

Added implementation for the SDL API functions:
* Functions to set, get and remove synchronously key-values from
  SDL storage.
* Functions to set, get and remove synchronously group members from
  SDL storage.
* Functions to acquire, manipulate and release a lock.

Added also simple examples how to use SDL API functions.

Added configuration file for the tox tool to run unittests.

Added configuration file for the tox tool to generate documents.

Added sonar pom and tox hooks to verify code coverage.

Change-Id: I1f12879f725d903397ee8f9e788edf7890db381d
Signed-off-by: Timo Tietavainen <timo.tietavainen@nokia.com>
diff --git a/ricsdl-package/LICENSES.txt b/ricsdl-package/LICENSES.txt
new file mode 100644
index 0000000..d5f6563
--- /dev/null
+++ b/ricsdl-package/LICENSES.txt
@@ -0,0 +1,29 @@
+Unless otherwise specified, all software contained herein is licensed
+under the Apache License, Version 2.0 (the "Software License");
+you may not use this software except in compliance with the Software
+License. You may obtain a copy of the Software License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the Software License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the Software License for the specific language governing permissions
+and limitations under the Software License.
+
+
+
+Unless otherwise specified, all documentation contained herein is licensed
+under the Creative Commons License, Attribution 4.0 Intl. (the
+"Documentation License"); you may not use this documentation except in
+compliance with the Documentation License. You may obtain a copy of the
+Documentation License at
+
+https://creativecommons.org/licenses/by/4.0/
+
+Unless required by applicable law or agreed to in writing, documentation
+distributed under the Documentation License is distributed on an "AS IS"
+BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+implied. See the Documentation License for the specific language governing
+permissions and limitations under the Documentation License.
+