Formalize how we run under "dropwizard" mode.

 - inject key configuration values into the Blueflood configuration
 - create config stanzas for riemann and graphite configs
Ensure that we can still run in safely uner the BluefloodServiceStarter.
Merge pull request #292 from gdusbabek/honor_dropwizard_config

Honor dropwizard config
Upgrade the http client version in bf-http
Merge pull request #294 from chinmay-gupte/chinmay/upgrade_http_client_version_in_http_module

Upgrade the http client version in bf-http
Make improvements to beanchmarking tool
Improve logging