Disable building Java package
Disable building Java package

Maven build job fails due to bugs in openjdk-8 and surefire plugin.
Known workarounds seem not to work for monasca-api.

This change disables building Java package in OpenStack CI.

Java API was deprecated in Queens release.

Story: 2004256
Task: 27808
Change-Id: Ibd48eb58dfff667e9234783807dd070dff7e72b8

openstack/monasca-api,openstack/monasca-api,stackforge/monasca-api,openstack/monasca-api,stackforge/monasca-api,stackforge/monasca-api,stackforge/monasca-api