Add description to policies in admin_password.py
Add description to policies in admin_password.py

blueprint policy-docs

Change-Id: Ic672a2acfa4742403aead5126f7e59a3dd48f69d

klmitch/nova,openstack/nova,rajalokan/nova,vmturbo/nova,gooddata/openstack-nova,vmturbo/nova,klmitch/nova,openstack/nova,phenoxim/nova,Juniper/nova,klmitch/nova,mikalstill/nova,mahak/nova,mikalstill/nova,klmitch/nova,vmturbo/nova,rajalokan/nova,phenoxim/nova,gooddata/openstack-nova,vmturbo/nova,openstack/nova,rahulunair/nova,gooddata/openstack-nova,jianghuaw/nova,mahak/nova,Juniper/nova,Juniper/nova,mikalstill/nova,rahulunair/nova,Juniper/nova,jianghuaw/nova,jianghuaw/nova,gooddata/openstack-nova,rajalokan/nova,rahulunair/nova,rajalokan/nova,mahak/nova,jianghuaw/nova