Pass the mongo uri to abbey.
Set default to 'amis' just like in stage_release.py
Add nginx to the forums role.
Set a default value for nginx_default_sites.
Change how the deployment gets updated.
Update the deployment document instead of overwriting it.

Since mongo doesn't do recursive updates of complex documents.
Let abbey accept git hashes.
adding some more install facts for scratch installs
Support noop updates for the deployment collection.
Colon not =
Merge pull request #654 from edx/feanil/pass_mongo

Feanil/pass mongo
fixes whitespace in generated file, adds tag default.
whitespace
Support noops and safe_dump yaml for abbey.
Merge pull request #663 from edx/feanil/noops_and_safe_yaml

Support noops and safe_dump yaml for abbey.
Merge pull request #662 from edx/e0d/forum-vars

E0d/forum vars
adding certs
Make the noop optional.
Merge pull request #664 from edx/feanil/correct_args

Make the noop optional.
Adds upstream address and request time to ssl logging