make the ocata-specific landing page the same as the main page
make the ocata-specific landing page the same as the main page

Change-Id: I03108ccb98e4a586669e34c7ea6cde18060b1c9c
Signed-off-by: Doug Hellmann <0798ebecfb7bc4dfb9d0445c2fa030eb64e1fa1c@doughellmann.com>

openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals