This updates changes how Etherpad is built and how authentication is
managed for API requests. This ends up changing a lot of our tooling
around etherpad but etherpad itself (other than the auth changes)
doesn't seem to change much. In response to this I update our admin docs
on common api tasks to use the new process. Then update our testinfra
testing as well to cover that to ensure it all continues to work
properly after this change.
Note the Dockerfile updates are all adapted from upstream. I'm actually
not fond of the decisions they have made in this image build, but being
in sync is probably more important than fixing the multistage builds and
being different.
This change jumps us from v1.9.7 to 2.0.3 (covers releases 2.0.0, 2.0.1,
and 2.0.2 too). A changelog can be found here:
https://github.com/ether/etherpad-lite/blob/v2.0.3/CHANGELOG.md
Change-Id: Ia7c4f26d893b4fc4a178262e1a6b9f3fa80d2a5c
b2607979ab