[DOCS] Adding in note for pretend_min_part_hours_passed
[DOCS] Adding in note for pretend_min_part_hours_passed

After careful consideration, this was the best placement
for this addition. It does not fit into the swift config
files, nor the dev docs or openstack-manuals.
Open to suggestion, but this is my recommendation.

Change-Id: I945c1852a8e3e1a317bd6550b077ab24dd937eb8

weezer/openstack-ansible,openstack/openstack-ansible,Logan2211/openstack-ansible,cfarquhar/openstack-ansible,cfarquhar/openstack-ansible,yanyao/newton,BjoernT/os-ansible-deployment,cloudnull/os-ansible-deployment,BjoernT/openstack-ansible,cloudnull/os-ansible-deployment,os-cloud/os-ansible-deployment,bunchc/openstack-ansible,BjoernT/openstack-ansible,yanyao/newton,BjoernT/os-ansible-deployment,robb-romans/openstack-ansible,yanyao/openstack-ansible,openstack/openstack-ansible,weezer/openstack-ansible,stackforge/os-ansible-deployment,Logan2211/openstack-ansible,bunchc/openstack-ansible,yanyao/openstack-ansible,stackforge/os-ansible-deployment,os-cloud/os-ansible-deployment,BjoernT/os-ansible-deployment,robb-romans/openstack-ansible