Process entire bulk message at once

There's definitely some hacking in here.
Fix bulk size counting

This won't actually measure the size of the full bulk request
anymore, but we don't really care since we only have one bulk action
per message. Also we're hitting the timeout anyway.
Up version
Merge branch 'es-1.2' into process-full-bulk-request-in-script

Conflicts:
	pom.xml
Merge pull request #1 from backstop/process-full-bulk-request-in-script

Process entire bulk message at once LOB-161

- let the river flow