Modules are collected on bridge and then synchronized to remote hosts
where puppet is run. This is done to ensure an atomic run of puppet
across affected hosts.
These modules are described in modules.env and cloned by
install_modules.sh. Currently this is done in install-ansible, but
after some recent refactoring
(I3b1cea5a25974f56ea9202e252af7b8420f4adc9) the best home for it
appears to now be in puppet-setup-ansible; just before the script is
run.
Change-Id: I4b1d709d7037e2851d73be4bc7a202f52858ad4f