Fix rvm permissions for fpm gem
Fix rvm permissions for fpm gem

Install fpm gem using rvm puppet module instead of 'gem' provider.
This fixes permissions issue which breaks gems installation from
jenkins jobs.

Change-Id: I44e7e31a6dde54d3c1d125310d261932a8b1f383

fuel-infra/puppet-manifests,fuel-infra/puppet-manifests,fuel-infra/puppet-manifests,fuel-infra/puppet-manifests