Handle AWS 301's in Purge task (#569) (#678)
Handle AWS 301's in Purge task (#569) (#678)

Similar to the 8051b28 commit, this commit will attempt the requests
without the path-based addressing in the Purging task.

Fixes #568
starkandwayne/shield,starkandwayne/shield,starkandwayne/shield,starkandwayne/shield,starkandwayne/shield