Fix kubeconfig merge with existing config (#351)

* Fix kubeconfig merge with existing config

Signed-off-by: alankan-finocomp <79436574+alankan-finocomp@users.noreply.github.com>
Signed-off-by: Derek Nola <derek.nola@suse.com>
Co-authored-by: Derek Nola <derek.nola@suse.com>