more ubuntu tweaks to vagrantfile, installing go, building protocol_observer
more ubuntu tweaks to vagrantfile, installing go, building protocol_observer

circonus-labs/circonus-one-step-install,circonus-labs/circonus-one-step-install,maier/circonus-one-step-install,circonus-labs/circonus-one-step-install,maier/circonus-one-step-install,maier/circonus-one-step-install