Improve "antctl mc" usage

[antoninbas]

When I used the wrong Antrea version tag by mistake, I got the following error:

antctl mc deploy leadercluster -n antrea-multicluster --antrea-version 1.15.0
Error: json: cannot unmarshal string into Go value of type unstructured.detector

The error is because the tag should b v1.15.0 instead of 1.15.0.

It would be good IMO if the v was optional (i.e., we could support both formats). And it would also be good to have a better error message if someone provides an invalid tag or a tag that doesn't exist.

cc @luolanzone

[luolanzone]

@hjiajing

[hjiajing]

@hjiajing

Thanks for the reminder, I will check and fix this.

[EraKin575]

can I work on this issue?

[antoninbas]

@EraKin575, @hjiajing may be working on this already. If not, you are welcome to submit a PR.

[hjiajing]

Hi @antoninbas , I have not worked on this yet, maybe @EraKin575 could do it.

[antoninbas]

@EraKin575 feel free to submit a PR for this

[luolanzone]

Hi @EraKin575 are you still actively working on this issue?

[roopeshsn]

Hi @luolanzone! I am working on this issue and will try to raise a PR by today.