bugfix: setup requires bash to run correctly, not just sh

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
feature: added configurable port + password + identity to setup script for knife solo

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
add vagrant-omnibus vagrant plugin

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
add usage of vagrant test to readme

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
Merge branch 'vagrant-test'