Work in progress moving code from the other repos.

- https://github.com/loverdos/SlipStreamServer/tree/okeanos_connector

- https://github.com/loverdos/SlipStreamClient/tree/okeanos_connector

To the best of my knowledge, the license will be the license of the
code from the above repos. I have copied the latest file versions
(commits c0cdb1f17fd04849f5ac1e5741bf5cf66124c684 and
34773c4acbb02c94e6855e11eac0bb3746705be9 respectively) and any missing stuff or
any change will be incorporated in subsequent commits.
Fix a call for a changed Slipstream API
Add service discoverability
 Work in progress moving code from the other repos.

 - https://github.com/loverdos/SlipStreamServer/tree/okeanos_connector

- https://github.com/loverdos/SlipStreamClient/tree/okeanos_connector

To the best of my knowledge, the license will be the license of the
code from the above repos. I have copied the latest file versions
(commits c0cdb1f17fd04849f5ac1e5741bf5cf66124c684 and
34773c4acbb02c94e6855e11eac0bb3746705be9 respectively) and any missing stuff or
any change will be incorporated in subsequent commits.
Remove goal that executes nose tests
Moved and renamed connector package from slipstream/cloudconnectors/okeanos to slipstream_okeanos.  Updated scripts and POMs accordingly.
Add installation instructions for the SlipStream Server machine
Add Apache v2 license.
Tentatively add NOTICE.md mentioning license and software to be included
A bit more pep8 friendly.
Updated cloud connectors to be able to work with SS 2.3.0.  Added unit tests.
Updated .gitignore