tor-github/pr/1283, with the following changes:
* cherry-pick the merge commit in 1283 on top of...
* tor-github/pr/1174, but with the last commit re-worded to remove
    the fixup, because fixups break our push rules.

This is an "ours" merge, except for the bugfix version change in
changes/bug30649.

tor-github/pr/1174, but with the last commit re-worded to remove
the fixup, because fixups break our push rules.

This change makes test-stem faster and more reliable.

Use "make test-stem-full" to run all of stem's tests.

Closes ticket 31554.

Previously, v3 single onion services failed when all intro nodes were
unreachable via a 1-hop path. Now, we select intros that are only available
via a 3-hop path, and use a 3-hop path to connect to them.

Fixes bug 23507; bugfix on 0.3.2.1-alpha.

Previously, we always used a 1-hop path, no matter how many times a v3
single onion intro failed.

Fixes bug 23818; bugfix on 0.3.2.1-alpha.

Previously, we used a 1-hop path when a single onion rend failed
immediately, and a 3-hop path when it failed after trying to build
a circuit.

Fixes bug 23818; bugfix on 0.3.2.1-alpha.

Previously, we always used a 1-hop path, no matter how many times a v2
single onion intro failed.

Fixes bug 23818; bugfix on 0.2.9.3-alpha.

Previously, we used a 1-hop path when a single onion rend failed
immediately, and a 3-hop path when it failed after trying to build
a circuit.

Fixes bug 23818; bugfix on 0.2.9.3-alpha.

Sebastian Hahn authored 5 years ago and teor committed 5 years ago

The main build doesn't use HARDENING_OPTIONS, so the exclude shouldn't,
either. Reduces the number of builders by one.

New IP address from 194.109.206.212 to 45.66.33.45.

Signed request from Alex de Joode, operator of dizum:
https://trac.torproject.org/projects/tor/ticket/31406



Published descriptor by dizum on August 12th, 2019:

--
r dizum fqbq1v2DCDxTj0QDi7+gd1h911U GZmZtCLaPDQNxkhIFj8UcgTRAuA 2019-08-12 15:28:40 45.66.33.45 443 80
s Authority Fast Running Stable V2Dir Valid
v Tor 0.4.0.5
pr Cons=1-2 Desc=1-2 DirCache=1-2 HSDir=1-2 HSIntro=3-4 HSRend=1-2 Link=1-5 LinkAuth=1,3 Microdesc=1-2 Relay=1-2 Padding=1
w Bandwidth=20 Unmeasured=1
p reject 1-65535
--

Finally, confirmed by DNS:

  $ dig +short tor.dizum.com
  45.66.33.45

Closes #31406

Signed-off-by: David Goulet <dgoulet@torproject.org>

Also document the other log changes in this branch.