Make jvmSelect function JDK 9 aware
Make jvmSelect function JDK 9 aware

See: http://openjdk.java.net/jeps/223

We could simplify the logic by changing the callers of this script
(Jenkins job parameters) from "jvmSelect oracle 8" to "jvmSelect oracle 1.8"

But for now I've retained compatibility with assuming the leading
"1."

scala/scala-jenkins-infra,scala/scala-jenkins-infra