remove duplicate import with different name
remove duplicate import with different name

`k8s.io/kubernetes/pkg/api` is imported directly and once with the alias
import name `kapi` so remove the original import and keep the aliased with
`kapi` one and also replace the code bits which call it with `api` name.

rupalibehera/kompose,kubernetes/kompose,rupalibehera/kompose,procrypt/kompose,ashetty1/kompose,ashetty1/kompose,rupalibehera/kompose,procrypt/kompose,procrypt/kompose,kubernetes/kompose,containscafeine/kompose,containscafeine/kompose,ashetty1/kompose,containscafeine/kompose,cdrage/kompose,kadel/kompose,skippbox/kompose,kadel/kompose,surajnarwade/kompose,cdrage/kompose,surajnarwade/kompose,surajnarwade/kompose,skippbox/kompose,skippbox/kompose