Update cookbooks and gems to latest versions
Remove deprecated omnibus config
Remove cleanup commands; Use installed cabal path
Switch to embedded cabal path
Install a newer version of cabal into the environment

This ensures that we don't have anything getting put into the system
accidentally. I also ran into odd issues with older versions of cabal.
Install Ganeti haskell deps in one shot

This is to work around weird issues with cabal not figuring out the dep tree
sanely if you do them one by one. This ensures that it does it without any
problems (in theory).

This makes rebuilding an individual dep annoying but this at least works better.
Switch to installing all the haskell deps in one shot instead individually
Cleanup sed commands; Bump to latest 2.11 release
Switch to justhub repo for RHEL; make sure we include apt::default
Openstack test kitchen config

This is very OSL specific for now, but I'll fix that later