replace this with sha512 when it lands in upstream cekit (tmckay)

[todo]

oshinko-s2i/change-yaml.sh

Lines 113 to 118 in 9deb637

	# TODO replace this with sha512 when it lands in upstream cekit (tmckay)
	calcsum=$(md5sum /tmp/spark-${SPARK}-bin-hadoop${HVER}.tgz | cut -d" " -f1)
	$SED -i '\@url: https://archive.apache.org/dist/spark/@!b;n;s/md5.*/md5: '$calcsum'/' image.*.yaml
	#change the spark version in the env var
	$SED -i '\@name: SPARK_VERSION@!b;n;s/value:.*/value: '$SPARK'/' image.java.yaml

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This issue was generated by todo based on a TODO comment in 9deb637 when #281 was merged. cc @tmckayus.