Handle aspen.1 openedx release
replace geturl with a shell out to curl - to fix broken certificate management
validate certs=no on apt_repository due to ansible bug
Add the new version of apt.
Switch to using the new apt_repository module.
ignore errors on MOTD setting
Merge tag 'aspen.1' into docker_release

Conflicts:
	playbooks/roles/edxapp/defaults/main.yml
	playbooks/vagrant-fullstack.yml
use docker_release branch of edx-platform
disable the sample course that doesn't work well
some more changes from aspen.1
merge docker_release@2014.10.31
Merge branch 'appsembler-docker_release' into docker_release