Fixed the autoSubmit

I found that the autoSubmit option was broken. When not specifying a publicIdentifier, the application would get 422 errors, but when specifying one, it didn’t auto submit.

My command line invocation was (like) this:
open -a HockeyApp "${ARCHIVE_PATH}" --args onlyDSYM autoSubmit identifier=1234567890abcdef token=1234567890abcdef