Misc updates related to release.

howto/release/components/index.rst
howto/release/components/maclearner/index.rst
howto/release/components/olttopology/index.rst
howto/release/components/pppoeagent/index.rst
----------------------------------------------
  o Document maven plugins and dependencies for components.

config.mk
---------
  o Disable yaml linting for now, volume problems to cleanup.

howto/code/index.rst
howto/code/job-failures.rst
---------------------------
  o Added a new page for documenting common jenkins problems.

howto/release/checklist.rst
howto/release/preparation.rst
overview/contributing.rst
release_notes/release_process.rst
---------------------------------
  o Incremental edits related to release steps.

Change-Id: I84db4d422556dbbeeaa5bf5351060dc193585e40
diff --git a/overview/contributing.rst b/overview/contributing.rst
index dba3b8e..f774e18 100644
--- a/overview/contributing.rst
+++ b/overview/contributing.rst
@@ -90,6 +90,10 @@
 
 All of the VOLTHA components and the charts include a VERSION file that specifies
 the version of the service, library, protobuf, test suite included in the repository.
+
+- The `VERSION <https://gerrit.opencord.org/plugins/gitiles/voltha-go/+/refs/heads/master/VERSION>`_ file can be found in a repository root directory.
+- One exception: maven based builds using pom.xml files.
+
 The VERSION is in the format and follows the `SemVer principles <https://semver.org>`_
 VOLTHA also follows the guidelines on how to increment versions as described in the
 `SemVer specification <https://semver.org/#semantic-versioning-specification-semver>`_.