Bug 1491371 - Add config file for pinning to Mozilla repositories. r?tomprince
.gecko_ref.yml is the new canonical location for pinning to a mozilla branch
and revision. This is because the current pinnin method of updating
.taskcluster.yml will not be supported going forward.
Differential Revision:
https://phabricator.services.mozilla.com/D16933
---
GECKO_BASE_REPOSITORY: https://hg.mozilla.org/mozilla-unified
GECKO_HEAD_REPOSITORY: https://hg.mozilla.org/mozilla-central
GECKO_HEAD_REF: default
### For branches
# GECKO_BASE_REPOSITORY: https://hg.mozilla.org/mozilla-unified
# GECKO_HEAD_REPOSITORY: https://hg.mozilla.org/releases/mozilla-beta
# GECKO_HEAD_REF: 8574d2808aaa
