[VOTE] PIP-277: Add `current` option in the Clusters list cmd

[guo jiwei]

Hi dev,
   This thread is to start a vote for PIP-277:  Add `current` option in the
Clusters list cmd

    Discuss thread :
https://lists.apache.org/thread/800r6ld5wg7bttbywmk38m1qx12hs6nl
    PIP: https://github.com/apache/pulsar/pull/20614



Regards
Jiwei Guo (Tboy)