raise ValueError when trying to delete a key with no name (#1328)
Added some unit tests for boto.s3.bucket
Merge branch 'pasc-1328_alternate_keyvalue_error' into develop

Closes #1338, #1336
Fixes #1328

* pasc-1328_alternate_keyvalue_error:
  Added some unit tests for boto.s3.bucket
  raise ValueError when trying to delete a key with no name (#1328)