Remove keystone PKI related parameters
Remove keystone PKI related parameters

These interfaces have all been deprecated by keystone, and we don't
offer any parameter interface to select PKI token format anyway,
so remove these to align with keystone reccomendations.

The keystone.conf.sample says these values may be silently ignored or
removed, so it seems reasonable to do the same here (parameter_defaults
should be ignored from old stacks).

Change-Id: Ic88d584863a98ed49fc335825fbfba7a52b0f14e
Depends-On: I8232262b928c91dcde7bea2f23fa2a7c2660719e

trozet/opnfv-tht,trozet/opnfv-tht,openstack/tripleo-heat-templates,openstack/tripleo-heat-templates,dprince/tripleo-heat-templates,trozet/opnfv-tht,dprince/tripleo-heat-templates