puppet-sahara: update Gerrit permissions
puppet-sahara: update Gerrit permissions

Update Gerrit permissions to fit with other Puppet OpenStack modules
that belong to puppet-modules.config characteristics.

Change-Id: I63f90529aacf5025467f11211c136f549bcb8724

Tesora/tesora-project-config,anbangr/osci-project-config,citrix-openstack/project-config,anbangr/osci-project-config,coolsvap/project-config,noorul/os-project-config,citrix-openstack/project-config,noorul/os-project-config,Tesora/tesora-project-config,openstack-infra/project-config,dongwenjuan/project-config,openstack-infra/project-config,coolsvap/project-config,open-switch/infra_project-config,dongwenjuan/project-config,open-switch/infra_project-config