Exclude on s390x_linux (#6415)

Signed-off-by: Shelley Lambert <[email protected]>

Author: smlambert

jck/runtime.api/playlist.xml

@@ -515,8 +515,8 @@
                                 <impl>openj9</impl>
                         </disable>
                         <disable>
-                                <comment>Disabled on aix and windows as no xvfb capable of robot interaction</comment>
-                                <platform>ppc64_aix|x86-64_windows|x86-32_windows|aarch64_windows</platform>
+                                <comment>Disabled on aix and windows as no xvfb capable of robot interaction, hangs on s390x</comment>
+                                <platform>ppc64_aix|x86-64_windows|x86-32_windows|aarch64_windows|s390x_linux</platform>
                                 <impl>hotspot</impl>
                         </disable>
                 </disables>