(ambassador-ratelimit) Added watch functionality and wired up restart.
(ambassador-ratelimit) Added watch functionality and wired up restart.

Originally-Committed-To: https://github.com/datawire/ambassador-ratelimit#branch=cmd/rdl
Originally-Committed-As: 27d5de65d92ffddbd4b1948f7f5efed78d2ecc8e

datawire/ambassador,datawire/ambassador,datawire/ambassador,datawire/ambassador,datawire/ambassador