Fix enabled_filters default value in admin config docs
Fix enabled_filters default value in admin config docs

This fixes a couple of places in the admin scheduler config
docs that were listing out the enabled_filters default value
incorrectly because the ComputeFilter was missing. Rather than
try to keep the docs mirrored with the actual default value,
this change references the config option in one spot and avoids
listing the defaults in another.

Change-Id: I837aefcd37556a7b66b523529c5ca1f3dee8ac7f
Closes-Bug: #1833120

klmitch/nova,openstack/nova,rahulunair/nova,klmitch/nova,rahulunair/nova,klmitch/nova,openstack/nova,mahak/nova,mahak/nova,mahak/nova,klmitch/nova,openstack/nova,rahulunair/nova