This adds openstack-ansible to the Deployment Projects section in
the Documentation index for the developer site.
The change is dependent on the review to rename the project which
is scheduled for Friday, 11 September 2015.
Depends-On: I10588f1118f21793ef9a1a647184cf2e8de07260
Change-Id: Ie826fb52ae8d42d23658cc3b7929271f18d13648