ERP: ltp: skip msgctl11

msgctl11 fails on centriq-2400 randomly and cannot be duplicated
manually.

Change-Id: I81f8cc4d55d665ba9d0aadd52c7d8ebac87fe943
Signed-off-by: Chase Qi <chase.qi@linaro.org>
(cherry picked from commit 270a6d86253d6a7860c5ad7d3c2019dcda9fe68e)
diff --git a/automated/linux/ltp/skipfiles/skipfile-rpk b/automated/linux/ltp/skipfiles/skipfile-rpk
index b5a93a2..7133f93 100644
--- a/automated/linux/ltp/skipfiles/skipfile-rpk
+++ b/automated/linux/ltp/skipfiles/skipfile-rpk
@@ -21,3 +21,12 @@
 # to exit early (as observed by the number of test results)
 # https://bugs.linaro.org/show_bug.cgi?id=3487
 msgctl10
+# msgctl10 has been renamed to msgstress03 on master branch.
+msgstress03
+
+# msgctl11 fails randomly and cannot be duplicated.
+msgctl11
+# msgctl11 has been renamed to msgstress04 on master branch.
+msgstress04
+
+