Don't use ramdisk for ARM compatibility builds

Author: mark-vieira

.ci/jobs.t/elastic+elasticsearch+multijob+platform-support-arm.yml

@@ -3,7 +3,8 @@
     name: elastic+elasticsearch+%BRANCH%+multijob+platform-support-arm
     display-name: "elastic / elasticsearch # %BRANCH% - arm compatibility"
     description: "Elasticsearch %BRANCH% ARM (aarch64) compatibility testing.\n"
-    child-workspace: "/dev/shm/elastic+elasticsearch+%BRANCH%+multijob+platform-support-arm"
+    # Don't use ramdisk for now as we are exhausting memory and causing oomkiller to trigger
+    # child-workspace: "/dev/shm/elastic+elasticsearch+%BRANCH%+multijob+platform-support-arm"
     project-type: matrix
     node: master
     scm: