Install of openjdk11 is failing (again)

[sormuras]

It’s 13, again.

Install of openjdk13-ea is failing (again)

@dominic @BanzaiMan et al – please update Travis CI’s copy of install-jdk.sh to version 2019-05-02. It works from OpenJDK 9 to 13 (again): https://travis-ci.org/sormuras/sormuras.github.io/builds/527470511 Oracle fixed the underlying certificate issue on https://jdk.java.net and decided to bring back all download.java.net links…