This is intended as an amendment to #5674 as using M_UNKNOWN as the errcode makes it hard for clients to differentiate between an invalid password and a deactivated user (the problem we were trying to solve in the first place).

M_UNKNOWN was originally chosen as it was presumed than an MSC would have to be carried out to add a new code, but as Synapse often is the testing bed for new MSC implementations, it makes sense to try it out first in the wild and then add it into the spec if it is successful. Thus this PR return a new M_USER_DEACTIVATED code when a deactivated user attempts to login.

Share SSL options for well-known requests

Disable codecov reports to GH comments.

The double posting is really annoying, and I don't think anyone is
actually reading them. The commit statuses should give a good summary
and will link to a full report.

Don't recreate current_state_events.membership column

Fix current_state_events membership background update.

Turns out not all rooms are in `rooms`, so lets fetch the room list from
`current_state_events`. We move the delta file to force it to be run
again.

Fix error handling when fetching remote device keys

Add unit test for current state membership bg update

The `expire_access_token` didn't do what it sounded like it should do. What it
actually did was make Synapse enforce the 'time' caveat on macaroons used as
access tokens, but since our access token macaroons never contained such a
caveat, it was always a no-op.

(The code to add 'time' caveats was removed back in v0.18.5, in #1656)

Fix room summary when rejected events are in state

Remove some more joins on room_memberships

Fix current_state bg update to work on old SQLite

* Fix debian packages for sid being called buster.

I don't know why the sid images return buster as its codename in
`lsb_release` but it does, so lets just grab the codename from the
distro we pass into dockerfile

* Newsfile

Add ability to pass arguments to looping calls

Log when we receive a /make_* request from a different origin