Start working on ml api config
Add in bastion role
vpc changes
Add in virtualenv
Fix for bastion push
Merge remote-tracking branch 'origin/master' into vik/ml-api

Conflicts:
	playbooks/roles/common/tasks/main.yml
	playbooks/roles/lms/tasks/main.yml
Playbook vars, changes
Edit ml api playbooks
Roles for ml api
Update ansible tasks
remove equals sign
Update playbook to download nltk data, remove debian package listing
Better task descriptions
Add in some upstart config and update tasks
Instance is now mostly brought up
Update playbook to work with elb/nginx
Merge remote-tracking branch 'origin/master' into vik/ml-api
Checkout specific branch
Add github to known hosts, install machine learning package
fix yaml