Bump jDocker

Signed-off-by: Nigel Magnay <nigel.magnay@gmail.com>
Make the docker launcher use the standard jenkins delegated SSH launch
mechanism.

Fix the retention strategy to avoid a race condition in jenkins.



Signed-off-by: Nigel Magnay <nigel.magnay@gmail.com>
Merge pull request #21 from dreewoo/master

New builder to add a new docker template to all docker clouds