Do not install javamelody on Ubuntu Trusty.

tasks/tomcat-javamelody.yml

@@ -1,10 +1,6 @@
 ---
 - name: Manage the javamelody installation
   block:
-  - set_fact:
-      ansible_python_interpreter: /usr/bin/python3.6
-    when: ansible_distribution_release == "trusty"
-
   - name: Install the javamelody dependency jar into the Java shared libs directory
     maven_artifact: artifact_id=jrobin version=latest group_id=org.jrobin extension=jar dest=/usr/share/java/jrobin.jar verify_checksum=always mode=0644 owner=root group=root repository_url=https://repo1.maven.org/maven2
 
@@ -17,11 +13,10 @@
       - javamelody-core.jar
       - jrobin.jar
 
-  - set_fact:
-      ansible_python_interpreter: /usr/bin/python
-    when: ansible_distribution_release == "trusty"
-
-  when: tomcat_javamelody
+  when:
+    - tomcat_javamelody
+    - ansible_distribution == "Ubuntu"
+    - ansible_distribution_version is version_compare('16.04', '>=')
   tags: [ 'tomcat', 'tomcat_javamelody', 'tomcat_conf' ]
 
 - name: Remove the javamelody jar and its dependencies if the javamelody support is disabled