Add ovsdb release notes for stable/magenisum

Signed-off-by: Chetan Arakere Gowdru <chetan.arakere@altencalsoftlabs.com>
Change-Id: I5ed385d7ba7a52c721904d66546f596a06d4b8bd
Signed-off-by: Chetan Arakere Gowdru <chetan.arakere@altencalsoftlabs.com>

diff --git a/docs/release-notes/projects/ovsdb.rst b/docs/release-notes/projects/ovsdb.rst
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+=============
+OVSDB Project
+=============
+
+Overview
+========
+
+The OVSDB Project provides the following functionality:
+
+* The OVSDB southbound plugin handles any OVS device that supports both the
+  OVSDB schema and uses the OVSDB protocol. This feature implements a defined
+  YANG model. Developers can use this functionality to develop in-controller
+  applications that leverage OVSDB for device configuration.
+* The HWvTep southbound plugin handles any OVS device that supports both the
+  OVSDB hardware vTEP schema and uses OVSDB protocol. This feature implements
+  a defined YANG model. Developers can use this functionality to develop
+  in-controller applications that leverage OVSDB hardware vTEP plugin for
+  device configuration.
+
+Behavior Changes
+================
+* `Ovsdb delete reconciliation support` to take care of removing stale tunnels.
+  `<https://git.opendaylight.org/gerrit/c/ovsdb/+/71845>`
+
+New and Modified Features
+=========================
+* No new or modified features in this release.
+
+Deprecated Features
+===================
+* No Deprecated Features in this release.
+
+Resolved Issues
+===============
+
+The following table lists the resolved issues fixed this release.
+
+.. list-table::
+   :widths: 15 55
+   :header-rows: 1
+
+   * - **Key**
+     - **Summary**
+
+   * - OVSDB-481
+     - Hwvtep TransactionHistory improvements.
+
+   * - OVSDB-482
+     - Optimization to get the NodeID from the DeviceOperCache in HwvtepPhysicalPortUpdateCommand.
+
+   * - OVSDB-484
+     - Check for the shard status before opening the OVSDB port/HwvtepSouthboundProvider initialization.
+
+   * - OVSDB-485
+     - Optimization to read the HwvtepNode from the cache.
+
+   * - OVSDB-491
+     - Optimize the OvsdbPortUpdateCommand during the ODL reboot/OVSDB connection.
+
+   * - OVSDB-494
+     - Fix HWvTep Port reconciliation to handle Physical_Port Delete and Add from switch.
+
+   * - OVSDB-459
+     - Avoid Bulk Topology Read During Reconciliation.
+
+Known Issues
+============
+The following table lists the known issues that exists in this release.
+
+.. list-table::
+   :widths: 15 55
+   :header-rows: 1
+
+   * - **Key**
+     - **Summary**
+
+   * - OVSDB-487
+     - Migrate to MD-SAL APIs
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