use maven to push docker images to registry
add documentation for stratos docker images
add image version to docker run script
add script to run docker nsenter command
fix incorrect variable name in stratos docker image
split up utility script for stopping and removing stratos images
fix dns for stratos docker image
fix typo in remove docker image script
modifying jaggery console app due to the changes in the back-end rest api

Signed-off-by: Akila Perera <ravihansa3000@gmail.com>
Fix auto-scaling policy validation schema
Fix validation cartridge version type
Merge branch 'master' of github.com:apache/stratos into tmp1