Merge pull request #2125 from edx/arbab/sandbox-volume-delete

Arbab/sandbox volume delete

playbooks/roles/launch_ec2/tasks/main.yml

@@ -49,6 +49,7 @@
     volumes:
       - device_name: /dev/sda1
         volume_size: "{{ root_ebs_size }}"
+        delete_on_termination: true
     zone: "{{ zone }}"
     instance_profile_name: "{{ instance_profile_name }}"
   register: ec2