RFR: hg: use --template instead of ext.py for metadata

Tue Aug 25 10:40:15 UTC 2020

On Tue, 25 Aug 2020 10:35:39 GMT, Erik Helin <ehelin at openjdk.org> wrote:

> Hi all,
> 
> please review this patch that makes `HgRepository.commitMetadata` use `--template` instead of `ext.py` for generating
> the metadata.
> Testing:
> - [x] `make test` passes on Linux x64
> 
> Thanks,
> Erik

Looks good!

-------------

Marked as reviewed by rwestberg (Reviewer).

PR: https://git.openjdk.java.net/skara/pull/739