ansible-playbooks/general#19 Set role header

tasks/main.yml

 ---
 # file: roles/java/tasks/main.yml
 
-- name: "Apt Repository"
-  apt_repository:
-    repo='deb http://ppa.launchpad.net/openjdk-r/ppa/ubuntu trusty main'
-    state='present'
-
-- name: "Install Agent"
-  apt:
-    pkg='openjdk-8-jre'
-    state='installed'
-    update_cache=yes
-    force=yes
+- name: "Java Role"
+  set_fact: role_java_started=true
+  tags: always
+
+- block:
+
+  - name: "Apt Repository"
+    apt_repository:
+      repo='deb http://ppa.launchpad.net/openjdk-r/ppa/ubuntu trusty main'
+      state='present'
+
+  - name: "Install Agent"
+    apt:
+      pkg='openjdk-8-jre'
+      state='installed'
+      update_cache=yes
+      force=yes
+
+  when: '"java" not in excluded_roles'