[Gluster-infra] Updating /opt/qa and installing dependencies

[Nigel Babu]

Hello,

I'm toying with the idea that each job will have commands to install
dependencies and update the /opt/qa folder. This will make the whole process of
adding a new node in the testing pool trivial requiring not a lot of effort
from the infrastructure team.

However, if we break the /opt/qa repo, we'll spread the breakage everywhere.
The fallback for errors would be to push a revert. Thoughts on this idea?

--
nigelb