Upgrade `requests` module to 2.3.0
Upgrade `oauthlib` module to 0.6.3
changing default key prefixes
fix bad quoting
changing default
change COMMON_ENABLE_BASIC_AUTH to False in the defaults of the common ansible role
Add ORA2 to the update script
Merge pull request #1286 from dhpollack/dhpollack/basic_auth_false2

COMMON_ENABLE_BASIC_AUTH to False in ansible/comment/defaults/main.yml
Merge pull request #1289 from edx/release

Release
Add new settings needed by ora for student submissions.
In the configuration hash values set to "None" will be converted to None
fixing typo
removing the dynamic cache key
new plays for roles
Merge pull request #1270 from edx/derf/new_plays

new plays for roles
Merge pull request #1291 from edx/feanil/new_ora_settings

Add new settings needed by ora for student submissions.
clone script updates and new cf temp

The clone script now takes explicit arguments for subnet, security group
and there is a dedicated vpc in the prod account for database clones
function not needed
Merge pull request #1292 from edx/jarv/edge-var-updates

In the configuration hash values set to "None" will be converted to None
Merge pull request #1293 from edx/jarv/db-clone-update

Jarv/db clone update