Updated openstack/openstack
Project: openstack/keystone  75d0bbd3886755ebeb331069e0dd74aa34906942
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Update man pages

The man pages were out of date.

To get the new man pages, I ran keystone-all -h and
keystone-manage -h and copy-pasted the output.

Change-Id: I6c6f6f9f56c2216cce300fcf24877b78b601db5d