Vagrantfile: Adapt pergamon configuration
- Vagrantfile: Drop unnecessary extra mount point
It's actually not needed as the existing mount is already propagated accordingly to the puppet setup.
Plus it's actually slowing down the initial pergamon provisioning to a bore.
- Vagrantfile: Fix pergamon fact to use the production ones
Related to T3325
Test Plan
vagrant up pergamon
Migrated from D5741 (view on Phabricator)