Support custom binaries when deploying a cluster

[BusyJay]

Feature Request

Is your feature request related to a problem? Please describe:

Sometimes we may want to deploy a customize binary to check what's going wrong in the cluster. #82 adds supports for playground, but cluster support is still missing.

[lucklove]

Does tiup cluster patch match your requirements?

[BusyJay]

Last time I checked, the command didn't work. What I need are:

1. Support both compressed and raw binaries.
2. Display information in tiup cluster show.

[lucklove]

We don't support raw binary because we should keep tracing the patch change and deploy the patched tarball in the future scale-out. For example, the user patch all tiflash nodes with a hotfix package then scale out tiflash. we should use the patched tarball in the scale out stage. But with binary, we don't have a tarball to do that.

[subains]

Last time I checked, the command didn't work. What I need are:

1. Support both compressed and raw binaries.
2. Display information in tiup cluster show.

I second this. It will make the developers life so much easier with raw binaries. Otherwise it's one more thing to learn to use tiup when fixing bugs or implementing features. It's a great tool and this will only make it better :-)