release notes: storhaug

Update release notes of 3.11 for storhaug

Updates: #59
Change-Id: I9cc3183d7087e3a2d9794e0d1d9ea1ddc41e5564
Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com>
Reviewed-on: https://review.gluster.org/17401
Smoke: Gluster Build System <jenkins@build.gluster.org>
Tested-by: Shyamsundar Ranganathan <srangana@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>

doc/release-notes/3.11.0.md

@@ -13,10 +13,26 @@ of bugs that has been addressed is included further below.
 ### Switched to storhaug for ganesha and samba high availability
 *Notes for users:*
 
+High Availability (HA) support for NFS-Ganesha (NFS) and Samba (SMB)
+is managed by Storhaug. Like the old HA implementation, Storhaug uses
+Pacemaker and Corosync to manage Virtual (floating) IP addresses (VIPs)
+and fencing. See https://github.com/linux-ha-storage/storhaug.
+
+Storhaug packages are available in in Fedora and for several popular
+Linux distributions from https://download.gluster.org/pub/gluster/storhaug/ 
+
+Note: Storhaug does not dictate which fencing solution should be used.
+There are many to choose from in most popular Linux distributions.
+Choose the one the best fits your environment and use it.
+
 *Limitations:*
 
+None
+
 *Known Issues:*
 
+None
+
 ### Added SELinux support for Gluster Volumes
 *Notes for users:*