Project: mesos
Issue MESOS-4941: Support update existing quota.
We want to support updating an existing quota without the cycle of delete and recreate. This avoids the possible starvation risk of losing the quota between delete and recreate, and also makes the interface friendly. Design doc: https://docs.google.com/document/d/1c8fJY9_N0W04FtUQ_b_kZM6S0eePU7eYVyfUP14dSys
Story points: 8