Add entry for ongoing network ddos

Closes #20

See merge request !26

Mark congestion control experiment as over

Closes #19

See merge request !25

Closes: #20.

Closes: #19.

Add bastet update for congestion control experiment

Closes #18

See merge request !24

Closes: #18.

Add Tor network with congestion control to experiments

Closes #17

See merge request !23

Closes: #17.

remove the v2 deprecation warning

Closes #16

See merge request !22

Closes: #16

routing issues seem to have gone away

See merge request !21

This was proposed in the template in: ci-templates!28

document the routing issues, since people are noticing and asking

See merge request !19

See https://forum.torproject.net/t/tor-metrics-and-torproject-org-are-down/1889

chase changes in ci-templates

See merge request !20

This makes the file more readable: all includes *and* deploys are in
the same place now.

We still need to override the rules so that we run only on
merge_requests. Upstream default is the opposite.

The SITE_URL was moved from the project's CI/CD variables back into
the YAML file, because they were "scoped" there and the template now
expects them to be "unscoped".

The image should be scoped to the build job only otherwise the
imported jobs from the template will fail because they will not have
the right image configured.

It seems all our good stuff here was merged in the templates, try it
out and see if it fixes our current pipeline failures.

... otherwise changes do not propagate

This will avoid clashing with other projects.

This should resolve the pipeline failures for the time being.

This requires commit:

8840fb990b5fbda65fdea8a34e62a41d7bf9ef85 "split ssh prepare tasks into
a different task"

... part of tpo/tpa/ci-templates!52.

Maybe this should be put in the template?

enable environments

See merge request !16