For Automated submission to AMO we need unique language pack versions for every submitted build.
This will produce versions that are not valid for AMO on nightly (61.0a1buildid2018...) but that's ok, we're not ready to
submit these automatically on the nightly channel yet, they do still install fine into Firefox manually.
On beta/release/esr the version will however be ok for AMO "60.0buildid2018..." and will be reasonably unique per push.
This patch has the intent that, outside of automation, users who don't set a buildid get a langpack version without that
specified (rather than a buildid being automatically generated for them).
The releng scriptworker (addonscript) that will do the publishing to AMO will additionally sanity check that the string
'buildid' is present in the version part, so we don't accidentally break this functionality in production.
This patch is also intended to be uplifted to Gecko 60 to support ESR60 needs.
MozReview-Commit-ID: KuvwMyD6bwd
Justin Wood
08d579ba8c