Remove deprecation warnings from Ansible 2.0.1.0

tasks/main.yml

@@ -41,7 +41,7 @@
   copy:
     src={{ sd_plugins_files_dir }}/{{ item }}
     dest={{ sd_agent_plugins_dir }}/{{ item }}
-  with_items: sd_plugins
+  with_items: '{{ sd_plugins }}'
   when: sd_plugins|length > 0
   notify: "ServerDensity | Restart Agent"