Clean up packaging, source compress_lz4 from a Build-Depends

- Remove example pre/post scripts
- Reformat control
- Use compress_lz4 from boot-keys package

Change-Id: I8a1d4f8a1582442fc972af6f1f720e0f4269112e
7 files changed
tree: e7e99a532a352449e93265a72d8fae2b0558e5e5
  1. debian/