[VOL-5009] - Update release notes

[VOL-5061]

overview/releases.rst
---------------------
  o Correct start/end release dates for v2.10-v2.12 to reflect reality.

release_notes/voltha_2.12.rst
-----------------------------
  o Populate the onos apps grid with versioned artifact and VCS urls.
  o Component kafka the only holdout

howto/release/checklist.rst
howto/release/components/index.rst
howto/release/index.rst
howto/release/voltha-docs/index.rst
howto/release/voltha-docs/release_notes.rst
howto/release/branching/
howto/release/components/igmpproxy/
howto/release/components/kafka/
howto/release/components/maclearner/
howto/release/components/pppoeagent/
howto/release/voltha-docs/release_history.rst
---------------------------------------------
  o Add more random content and links for release dependencies and tasks.

Change-Id: I31338488a4e626a97435429a36e200d54cf6267e
diff --git a/howto/release/voltha-docs/release_history.rst b/howto/release/voltha-docs/release_history.rst
new file mode 100644
index 0000000..f65fd91
--- /dev/null
+++ b/howto/release/voltha-docs/release_history.rst
@@ -0,0 +1,15 @@
+docs.voltha.org VOLTHA Releases
+===============================
+
+Intent
+------
+
+Update the VOLTHA Releases page to note date of release, end-of-support
+date and LTS, Long Term Support release candidates.
+
+Source
+------
+
+- `overview/releases.html <https://docs.voltha.org/master/overview/releases.html>`_
+- `overview/releases.rst <https://gerrit.opencord.org/plugins/gitiles/voltha-docs/+/refs/heads/master/overview/releases.rst>`_
+