Merge pull request #822 from edx/dcs/mat-16

Added HTTP Strict Transport Security headers to ensure clients always
adding doc-opts, needed for the ssh config script
Merge pull request #843 from edx/jarv/add-docopt

adding doc-opts, needed for the ssh config script
create alias for bastion

also some formatting fixes in the output, renaming jumpbox to bastion
Merge pull request #844 from edx/jarv/bastion-ssh-config

create alias for bastion
adding pkgs to jenkins_admin
removing notifies
Merge pull request #846 from edx/jarv/add-pkgs-to-jenkins

Jarv/add pkgs to jenkins
extra value to format.
Merge pull request #851 from edx/e0d/fix-secure-vars

extra value to format.
adding bastion role and task to setup access to the dbs from it
allowing ansible-provision to do bare installations
adding verbose flag to provision run
local action for cert and key stat before copy
sudo false for stats
adding dependency for the user role so that bastion users are installed
renaming user_info to USER_INFO
add prod-ssh to our example edx config
Stanford README: update ansible commands
Added CAS settings to edxapp