Remove deprecated custom policy file options

This PS removes deprecated custom policy file options, including:

  * cinder_policy_file
  * glance_policy_file
  * keystone_policy_file
  * neutron_policy_file
  * nova_policy_file

Specifying the location of a custom policy file should instead be
done by setting ``[patrole] custom_policy_files`` instead, as it
works with any service name.

Change-Id: I7d5cfa8d3cbd8a3818553ea1066005f9315f100c
3 files changed