ubuntu 14.04: switch to java-1.8 with package name
ubuntu 14.04: switch to java-1.8 with package name

package name is better than binary path

Signed-off-by: Amos Kong <eb01d8f828a6c9a20be4534e72e049aaf41503df@scylladb.com>

scylladb/scylla-artifact-tests,scylladb/scylla-artifact-tests,lmr/scylla-artifact-tests