Stem jenkins tests unable to invoke tor
Hi lovely sysadmins. Our jenkins tests are failing due to being unable to find tor...
https://jenkins.torproject.org/job/stem-tor-ci/
```
checking stem version... 1.6.0-dev
checking tor version... failed
./RESULT/tor --version returned exit status 127
```
This happened before on...
https://trac.torproject.org/projects/tor/ticket/22790
issue