Migrate to semeru java on Z and Power

Pickup semeru openj9 java builds on Z and Power. 

• 11.0.12+7 0.27.1
• 1.8.0.302.08 0.27.1

Will likely require path and rpm name changes, eg., in

• https://github.com/redhat-developer/codeready-workspaces-images/blob/crw-2-rhel-8/codeready-workspaces-plugin-java8-openj9/Dockerfile#L47
• https://github.com/redhat-developer/codeready-workspaces-images/blob/crw-2-rhel-8/codeready-workspaces-plugin-java11-openj9/Dockerfile#L48-L51

Hopefully do not require content-set changes in:

• https://github.com/redhat-developer/codeready-workspaces-images/blob/crw-2-rhel-8/codeready-workspaces-plugin-java8-openj9/content_sets.yml
• https://github.com/redhat-developer/codeready-workspaces-images/blob/crw-2-rhel-8/codeready-workspaces-plugin-java11-openj9/content_sets.yml