Add simple SMTP integration test

5 jobs for <span class="ref-name">wip/smtp-integration-tests</span> in 75 minutes (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #280460
fedora

00:06:53

passed #280461
ubuntu

00:09:44

 
  Test
passed #280462
flatpak

00:55:16

 
  Deploy
passed #280463
review

00:00:41

failed #280464
allowed to fail manual
stop_review

00:09:17

 
Name Stage Failure
failed
stop_review Deploy There has been a runner system failure, please try again
 * [new tag]         geary-0.8.3             -> geary-0.8.3
* [new tag] geary-0.9.0 -> geary-0.9.0
* [new tag] geary-0.9.1 -> geary-0.9.1
Checking out c58d0b74 as wip/smtp-integration-tests...

Skipping Git submodules setup
Downloading artifacts for flatpak (280462)...
Downloading artifacts from coordinator... ok id=280462 responseStatus=200 OK token=xHCSzvxM
ERROR: Job failed (system failure): Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running? (executor_docker.go:926:120s)