Add support of mcelog service

Change-Id: I32c83d63e7f359704ab6cc77dec07a1617880fbb
Prod-Related: PROD-20137
diff --git a/tests/pillar/system.sls b/tests/pillar/system.sls
index eb6201e..8aeb9d7 100644
--- a/tests/pillar/system.sls
+++ b/tests/pillar/system.sls
@@ -369,3 +369,8 @@
       interval: 20
       logpath: "/var/mylog/atop"
       outfile: "/var/mylog/atop/daily.log"
+    mcelog:
+      enabled: true
+      logging:
+        syslog: true
+        syslog_error: true