check-tempest-devstack-vm-full fails after IP configuration without any reason

It is failing to set up the workspace because fetching zuul refs errors out. You can see this happen in http://logs.openstack.org/20/56820/2/check/check-tempest-devstack-vm-full/5ad4bdb/logs/devstack-gate-setup-workspace-new.txt. I think this may be due to network hiccups between slave and zuul. We should probably add a retry in d-g like we do with git remote update.

Fetching origin
+ git remote prune origin
+ FALLBACK_ZUUL_REF=
+ git branch -a
+ grep remotes/origin/master
+ '[' master == master ']'
+ git_fetch_at_ref openstack/nova
+ local project=openstack/nova
+ local ref=
+ '[' '' '!=' '' ']'
+ return 1
+ git_fetch_at_ref openstack/nova refs/zuul/master/Z200fa6a20dc7464c8e7713d1443c996d
+ local project=openstack/nova
+ local ref=refs/zuul/master/Z200fa6a20dc7464c8e7713d1443c996d
+ '[' refs/zuul/master/Z200fa6a20dc7464c8e7713d1443c996d '!=' '' ']'
+ git fetch http://zuul.openstack.org/p/openstack/nova refs/zuul/master/Z200fa6a20dc7464c8e7713d1443c996d
error: RPC failed; result=7, HTTP code = 0
fatal: The remote end hung up unexpectedly
+ return 128
+ git_fetch_at_ref openstack/nova
+ local project=openstack/nova
+ local ref=
+ '[' '' '!=' '' ']'
+ return 1
+ '[' openstack/nova == openstack/nova ']'
+ echo 'Unable to find ref refs/zuul/master/Z200fa6a20dc7464c8e7713d1443c996d for openstack/nova'
Unable to find ref refs/zuul/master/Z200fa6a20dc7464c8e7713d1443c996d for openstack/nova
+ exit 1

Hi Clark,

"We should probably add a retry in d-g like we do with git remote update."

Do you know who can do this? I am pretty new here and not sure what to do next :|

Or, if you can point me to documentation so I can close these tests and try to fix it, I"ll love to give it a shot. Another patch == fun :)

If you want to hack on it, the file where this happens is...

    http://git.openstack.org/cgit/openstack-infra/devstack-gate/tree/devstack-vm-gate-wrap.sh

Check out the README.rst in that same directory for details on how to test modifications to devstack-gate. Enjoy, and let us know if you have more questions!

Fix proposed to branch: master
Review: https://review.openstack.org/59742