browspr: Make browspr use and modify the listenspec from the context.
browspr: Make browspr use and modify the listenspec from the context.

MultiPart: 2/2
Change-Id: Ieb5646bd0e5de921f14c0e473e07e72e2f522025

vanadium/go.ref,vanadium/go.ref,vanadium/go.ref,vanadium/go.ref,vanadium/go.ref,vanadium/go.ref