add --all flag to test cleanup script
add --all flag to test cleanup script

Due to the universe's trend towards entropy, my AWS account is filling
up with test buckets. Add an --all flag to test/cleanup.rb which removes
any bucket that looks like it was created test/setup.rb.

ConduceInc/vagrant-gsauth,ConduceInc/vagrant-gsauth,WhoopInc/vagrant-s3auth,WhoopInc/vagrant-s3auth