Please trigger tests again when they fail due to transient infrastructure issues

One transient infrastructure issue I'm facing regularly is network connection timing out to the archive, IMO those tests should be rescheduled automatically:

https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-eoan/eoan/armhf/r/r-cran-cmprsk/20190515_071718_63767@/log.gz

Need to get 28.9 MB of archives.
After this operation, 6,723 kB of additional disk space will be used.
Err:1 http://ftpmaster.internal/ubuntu eoan/main armhf base-files armhf 10.2ubuntu2
  Could not connect to ftpmaster.internal:80 (91.189.89.99), connection timed out
Err:2 http://ftpmaster.internal/ubuntu eoan/main armhf bash armhf 5.0-4ubuntu1
  Unable to connect to ftpmaster.internal:http:
...
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?