Update maintainer list for openbmc/openbmc-test-automation

Added:
   - Michael Walsh as the peer new maintainer. He is actively
     contributing to automation, reviews and maintaining stable
     code.

Change-Id: Ie3b670106203e967b2523f7c7d5d5e6862fce82c
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index e4ec3f7..e12293c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -119,8 +119,8 @@
 R:  Andrew Geissler <andrewg@us.ibm.com> <andrewg!>
 
 @openbmc-test-automation://*
-R:  George Keishing <gkeishin@in.ibm.com> # TODO: MISSING IRC HANDLE
-R:  Rahul Maheshwari <rahulmaheshwari@in.ibm.com> # TODO: MISSING IRC HANDLE
+M:  George Keishing <gkeishin@in.ibm.com> <gkeishin!>
+R:  Michael Walsh <micwalsh@us.ibm.com> # TODO: MISSING IRC HANDLE
 
 @openbmc://*
 R:  Brad Bishop <bradleyb@fuzziesquirrel.com> <radsquirrel!>