RFR + RFA [XS]: 8219710: Bump update version for OpenJDK: jdk11.0.4

[Langer, Christoph]

Hi,

with the jdk11u-dev repo available, it is time to update the version number in there to start OpenJDK 11.0.4 activities.

Please review and approve:

Bug: https://bugs.openjdk.java.net/browse/JDK-8219710
Webrev: http://cr.openjdk.java.net/~clanger/webrevs/8219710.0/

I would push this as the first change in jdk11u-dev after tagging the current state as jdk-11.0.4+0. (https://mail.openjdk.java.net/pipermail/jdk-updates-dev/2019-February/000621.html)

Best regards
Christoph