update 4.0 Dockerfile to add -Xss512k to JVM_OPTS for ppc64le#252

tianon merged 1 commit intodocker-library:masterdocker-library/cassandra:masterfrom

Mathieu-Ferraton:4.0-ppc64leMathieu-Ferraton/cassandra:4.0-ppc64leCopy head branch name to clipboard