initial support for parameterized mesos role, user, and principal
hacked in a patch to enable credential support for native bindings; needs testing
hack bindings patch to return driver status
added debug line for mesos user
patch cleanup
rebased to mesos-go:native
rebased to mesos-go:native, removed patch
Merge branch 'master' into framework_auth
Merge pull request #92 from mesosphere/framework_auth

make mesos role, user, and principal configurable for framework