Stop using bosh packages inside warden containers [#47298255]

- Remove custom path environment variables in dea job.
- Update rootfs blob
- Bump src/dea_next:

  Alex Suraci, Bleicke and Max Brunsfeld (1):
        Put back code for bind mounts specified in config file

  David Sabeti and Max Brunsfeld (1):
        Remove code for mounting bosh packages into warden containers

  cf-frameworks (1):
        Update README.md