Make ubuntu packaging conditional future-friendly.
Make ubuntu packaging conditional future-friendly.

JackieXie168/rethinkdb,JackieXie168/rethinkdb,JackieXie168/rethinkdb,JackieXie168/rethinkdb,JackieXie168/rethinkdb,JackieXie168/rethinkdb,JackieXie168/rethinkdb,JackieXie168/rethinkdb,JackieXie168/rethinkdb