Description of problem:
Can't create "ocp4_admin.kubeconfig" with `oc config --kubeconfig`

Version-Release number of selected component (if applicable):
oc client: v4.3.2


How reproducible:
always

Steps to Reproduce:
When run automation cases: 
`oc config set-credentials admin --client-certificate=/root/workdir/dhcp-140-138-root/bbbb --client-key=/root/workdir/dhcp-140-138-root/aaaa --embed-certs=true --server=https://xxx --kubeconfig=/root/workdir/dhcp-140-138-root/ocp4_admin.kubeconfig --insecure-skip-tls-verify=true`

Actual results:
Can't create the config file 'ocp4_admin.kubeconfig'

Expected results:
3. Should create. 

Additional info:
`oc config --kubeconfig=/root/workdir/dhcp-140-138-root/ocp4_admin.kubeconfig` works well.