Add R3 release notes

- Add new page and link for R3 release notes.
- Add release notes content

Change-Id: I3c91a65b9692530913df9b078d8929e70af8349f
Signed-off-by: Kristal Dale <kristal.dale@intel.com>

doc/source/releasenotes/index.rst

@@ -9,6 +9,8 @@ You can find details about a release on the specific release page.
 +------------------------+---------------------+-------------------------------+
 | Version                | Release Date        | Notes                         |
 +========================+=====================+===============================+
+| StarlingX R3.0         | 2019-12             | :doc:`r3_release`             |
++------------------------+---------------------+-------------------------------+
 | StarlingX R2.0.1       | 2019-10             | :doc:`r2_0_1_release`         |
 +------------------------+---------------------+-------------------------------+
 | StarlingX R2.0         | 2019-09             | :doc:`r2_release`             |
@@ -23,6 +25,7 @@ You can find details about a release on the specific release page.
    r1_release
    r2_release
    r2_0_1_release
+   r3_release
 
 ------------------------------
 Project-specific release notes

doc/source/releasenotes/r3_release.rst

@@ -0,0 +1,98 @@
+==================
+R3.0 Release Notes
+==================
+
+.. contents::
+   :local:
+   :depth: 1
+
+---------
+ISO image
+---------
+
+You can find a pre-built ISO and Docker images for StarlingX release 3.0 at
+`CENGN’s StarlingX mirror
+<http://mirror.starlingx.cengn.ca/mirror/starlingx/release/3.0.0/centos/>`_.
+
+------
+Branch
+------
+
+The source code for StarlingX release 3.0 is available in the r/stx.3.0 branch
+in the StarlingX Git repositories.
+
+----------
+Deployment
+----------
+
+A system install is required to deploy the StarlingX release 3.0. There is no
+upgrade path from previous StarlingX releases.
+
+-----------------------------
+New features and enhancements
+-----------------------------
+
+The list below provides a detailed list of features with the associated
+StoryBoard entries for the features.
+
+* Infrastructure and Cluster Monitoring
+
+  `2005733 <https://storyboard.openstack.org/#!/story/2005733>`_
+
+* Integrate with Openstack Train
+
+  `2006544 <https://storyboard.openstack.org/#!/story/2006544>`_
+
+* Integrate Distributed Cloud with containers
+
+  `2004766 <https://storyboard.openstack.org/#!/story/2004766>`_
+
+* Integrate Backup & Restore with containers
+
+  `2004761 <https://storyboard.openstack.org/#!/story/2004761>`_
+
+* Intel FPGA K8s Device Plugin Initial Integration
+
+  `2006495 <https://storyboard.openstack.org/#!/story/2006495>`_
+
+* Intel GPU K8s Device Plugin Integration
+
+  `2005937 <https://storyboard.openstack.org/#!/story/2005937>`_
+
+* Intel QAT K8s Device Plugin Integration
+
+  `2005514 <https://storyboard.openstack.org/#!/story/2005514>`_
+
+* Layered Build Prep
+
+  `2006166 <https://storyboard.openstack.org/#!/story/2006166>`_
+
+* Redfish Integration
+
+  `2005861 <https://storyboard.openstack.org/#!/story/2005861>`_
+
+* Support for authenticated registry for bootstrap and application apply
+
+  `2006274 <https://storyboard.openstack.org/#!/story/2006274>`_
+
+* Support for OpenID connet authentication parameters for bootstrap
+
+  `2006235 <https://storyboard.openstack.org/#!/story/2006235>`_
+
+* Support for floating and pinned workloads on worker nodes
+
+  `2006565 <https://storyboard.openstack.org/#!/story/2006565>`_
+
+* Support for NTP and PTP co-existence
+
+  `2006499 <https://storyboard.openstack.org/#!/story/2006499>`_
+
+* Time Sensitive Networking for VMs
+
+  `2005516 <https://storyboard.openstack.org/#!/story/2005516>`_
+
+* Upversion container components
+
+  `2005860, <https://storyboard.openstack.org/#!/story/2005860>`_
+
+  `2006347 <https://storyboard.openstack.org/#!/story/2006347>`_