numerous improvements
adding stickiness policy to front ELB
Bringing over fab files from the old sysadmin repo

Attempted to strip out files and tasks we no longer
need.  There is more work to be done
Adding fab requirements file
Changes to make this run on @jbau 's machine

* remove capa from requirements, bump versions of dogapi and simplejson
* comment out stuff done to /etc/facter
* comment out pkg_version() b/c it needs  '../version-script/version.py'
undo accidental inclusion of playbook changes
missing tasks that create /opt/wwc/staticfiles
Merge pull request #53 from edx/bugfix/e0d/elb-configuration

numerous improvements
adding version-script
Merge remote-tracking branch 'origin' into jarv/fabric-for-deploys
removing capa
Merge pull request #76 from edx/vik/ml-api-v1

Vik/ml api v1
change statficfiles group to adm
Merge pull request #75 from edx/jbau/fix/staticfiles-dir

fill-in previously missing tasks that create /opt/wwc/staticfiles
set correct permissions for htpasswd
Merge pull request #77 from edx/jbau/fix/nginx-htpasswd-permissions

set correct permissions for htpasswd
reformatting example cms_auth_config
fixes example cms_auth_config default modulestore engine
Merge pull request #78 from edx/jbau/fix/remove-duplicate-keys-CMS-env-example

Jbau/fix/remove duplicate keys cms env example
readme: document post-bringup manual commands