refactor ansible code in to ansible-2.0 folder, and created space for ansible-2.10

ansible-2.0/roles/java/tasks/main.yml

@@ -0,0 +1,12 @@
+---
+# tasks/main.yml
+# define tasks here
+
+# install packages
+- name: Update apt cache.
+  apt: update_cache=yes cache_valid_time=86400
+
+- name: Ensure Java is installed.
+  apt: "name={{ item }} state=installed"
+  with_items: java_packages
+