shield v8.8.0

• upload new shield blob

• Bumped shield to v8.8.1

Deployment

releases:
- name:    shield
  version: 8.8.0
  url:     https://github.com/shieldproject/shield-boshrelease/releases/download/v8.8.0/shield-8.8.0.tgz
  sha1:    23f98e9880fd38f76f15b33be0f15510092190e7