Update git submodules

* Update puppet-gerrit from branch 'master'
  - Merge "Add bindep.txt file"
  - Add bindep.txt file
    
    Bindep is a tool for checking the presence of binary packages needed
    to use an application / library. It started life as a way to make it
    easier to set up a development environment for OpenStack projects.
    
    Change-Id: Ie8c9ef414d23102797197ad2811084c54ed9bee2
    Signed-off-by: Paul Belanger <pabelanger@redhat.com>