adding libfreetype6-dev
Merge pull request #1540 from edx/han/libfreetype6-dev

adding libfreetype6-dev to release
New base AMI, updating AMIs for Ubuntu
Merge pull request #1563 from edx/han/release-sandbox-ami

New base AMI, updating AMIs for Ubuntu
replace geturl with a shell out to curl - to fix broken certificate management
Merge pull request #1631 from edx/han/release-fix-geturl

replace geturl with a shell out to curl - to fix broken certificate mana...
Add the new version of apt.
validate certs=no on apt_repository due to ansible bug
Switch to using the new apt_repository module.
Merge pull request #1645 from edx/derf/ignore_cert_validations

Derf/ignore cert validations
Add sane defaults for djfs.

Conflicts:
	playbooks/roles/edxapp/defaults/main.yml
Merge pull request #1675 from edx/feanil/djfs_defaults_release

Add sane defaults for djfs.
Merge remote-tracking branch 'origin/release' into feanil/release_into_master

Conflicts:
	playbooks/roles/datadog/tasks/main.yml
	playbooks/roles/rabbitmq/tasks/main.yml
Merge pull request #1677 from edx/feanil/release_into_master

Feanil/release into master