Added devstack-with-lbaas-v2 installation documentation

This document explains the steps to configure Load-Balancer in
kilo.

Change-Id: Ic8c2f3cca80e331b7275f689051c07d863d918ea
Depends-On: I64a94aeeabe6357b5ea7796e34c9306c55c9ae67
diff --git a/doc/source/index.rst b/doc/source/index.rst
index 10f4355..84ef6fd6 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -68,6 +68,7 @@
    guides/neutron
    guides/devstack-with-nested-kvm
    guides/nova
+   guides/devstack-with-lbaas-v2
 
 All-In-One Single VM
 --------------------