Flat file generation and distribution.
Flatfile mode is used by default.
Reflecting new h2o-dev API.
More fixes in flatfile mode.

Includes:
 - parameter for setting log level for h2o.
 - setting IP, port for workers
Test for h2o clouding inside spark infrastructure.

For now the test is ignored.
Make a call private.
Missing file.
Upgraded h2o-dev version.