[deckhouse-cli] add missing command in kubectl error message

[brileyyyy]

Related to this issue: #137

Problem

When using d8 k edit commands and encountering errors, kubectl would suggest an incorrect command for retrying the operation:

Before:

error: moduleconfigs.deckhouse.io "console" could not be patched: ...
You can run `d8 replace -f /tmp/kubectl-edit-123.yaml` to try this update again.

After:

error: moduleconfigs.deckhouse.io "console" could not be patched: ...
You can run `d8 k replace -f /tmp/kubectl-edit-123.yaml` to try this update again.

The issue occurred because kubectl uses filepath.Base(os.Args[0]) to generate error messages, which returned "d8" instead of "d8 k".

Solution

Set os.Args[0] = "d8 k" before executing any kubectl command. This ensures that kubectl generates correct error messages with the proper command prefix.