Update maintainers for fabric-samples

Previously fabric-samples utilized the fabric list of maintainers. Over time
other contributors have become active. The fabric maintainers will use this
CR to vote for a new set of fabric-samples mainatiners, with the initial list
based on developers with the most contributions and reviews for fabric-samples
over the last 12 months.

Additionally, change fabric-samples from a two +2 policy to a
non-author code review policy.

Change-Id: I9c479f2e8a3dd7389e6e317aa4430cba1df9f3b3
Signed-off-by: David Enyeart <enyeart@us.ibm.com>

MAINTAINERS.md

@@ -1,5 +1,19 @@
-## Hyperledger Fabric Maintainers
+Maintainers
+===========
+
+fabric-samples uses a non-author code review policy, requiring a single +2 from a non-author maintainer.
+
+| Name | Gerrit | GitHub | Chat | email |
+|---------------------------|---------------------|------------------|----------------|-------------------------------------|
+| Arnaud Le Hors | lehors | lehors | lehors | lehors@us.ibm.com |
+| Bret Harrison | harrisob@us.ibm.com | harrisob | bretharrison | harrisob@us.ibm.com |
+| Chris Ferris | ChristopherFerris | christo4ferris | cbf | chris.ferris@gmail.com |
+| Dave Enyeart | denyeart | denyeart | dave.enyeart | enyeart@us.ibm.com |
+| Gari Singh | mastersingh24 | mastersingh24 | garisingh | gari.r.singh@gmail.com |
+| Jason Yellick | jyellick | jyellick | jyellick | jyellick@us.ibm.com |
+| Matthew B White | mbwhite | mbwhite | mbwhite | whitemat@uk.ibm.com |
+| Simon Stone | simonstone1 | sstone1 | sstone1 | sstone1@uk.ibm.com |
+
+Also: Please see the [Release Manager section](https://github.com/hyperledger/fabric/blob/master/docs/source/MAINTAINERS.rst)
 
-[MAINTAINERS](http://hyperledger-fabric.readthedocs.io/en/latest/MAINTAINERS.html)
-
-<a rel="license" href="http://creativecommons.org/licenses/by/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by/4.0/88x31.png" /></a><br />This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 International License</a>
+<a rel="license" href="http://creativecommons.org/licenses/by/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by/4.0/88x31.png" /></a><br />This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 International License</a>.