rename java.home to java_home to not be in the same var tree as java.version (#312)

Author: pallinger

defaults/main.yml

@@ -308,8 +308,7 @@ grafana:
 
 java:
   version: 17
-  # this breaks templating.
-  #home: /usr/lib/jvm/java-{{ java.version}}
+java_home: /usr/lib/jvm/java-{{ java.version }}
 
 localstack:
   enabled: false

tasks/dataverse-build.yml

@@ -27,7 +27,7 @@
     create: yes
 
 - name: build warfile without tests and default maven. tail /tmp/dataverse/mvn.out for gory details.
-  shell: "export JAVA_HOME={{ java.home }} && mvn -T 2C clean package -Dmaven.test.skip=true > mvn.out"
+  shell: "export JAVA_HOME={{ java_home }} && mvn -T 2C clean package -Dmaven.test.skip=true > mvn.out"
   args:
     chdir: "{{ dataverse.srcdir }}"
   when: dataverse.unittests.enabled == false and