This is not needed anymore since post-release issue triaging
is now done using a dedicated GitLab user.

Tor Browser 10.0

See merge request tails/tails!189

Test suite: switch to virtio transport for the remote shell

Closes #11888

See merge request tails/tails!185

We currently install 10.0-build2 but we avoid having to import
10.0-build3 by applying the only change it has, namely this pref
change.

This commit should be reverted next time we import a new Tor Browser.

Test Thunderbird with local email server on Jenkins

Closes #11890 and sysadmin#12277

See merge request tails/tails!172

Test suite: use versioned python2 interpreter for otr-bot.py

See merge request tails/tails!186

Wrt. uBlock, this fixes a regression introduced
by 9164c054.

Wrt. HTTPS Everywhere, this fixes a regression introduced
when importing a Tor Browser 10.x that embedded the add-on
in omni.ja.

Otherwise, any test suite run from a branch based on devel fails
to check for available upgrades.

Fixes regression introduced in 1eb9213a.

Fixes syntax problem introduced in e80f093c.
For some reason I don't understand, the script works either way.

Suggested by Rubocop:
https://docs.rubocop.org/rubocop/cops_lint.html#lintinheritexception

In Tor Browser 10.0a7 the previous method for avoiding the mandatory
extension signature check for HTTPS-Everywhere was replaced with a new
one, which bundles it in omni.ja as a system extension. So we apply
the same trick for uBlock Origin (which lacks a signature because we
install it from Debian).

Details: https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/40091

Refs: #17933

This is in preparation for refs: #17933.

/usr/bin/python is not guaranteed to exist in Bullseye anymore.
For example, there's no such executable on my sid system.

Test suite: add debug logging so we can tell whether we're installing the hosts' email server's snakeoil certificate

See 90231318, which added this
feature and implemented it everywhere else.