doc: Moved installation portion to the installation section.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Moved installation portion to the installation section.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Removed Gatway from Ceph Object Storage. Added Yum repo information.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Created new libvirt install for debian/ubuntu.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Added new libvirt install for RPM.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Created new QEMU install for debian.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Created new QEMU install for RPMs with provision for Ceph-specific packages.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Created installation doc for Yum priorities. Ceph-specific packages need it.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Created new index to incorporate side-by-side deb/rpm installs.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>