CreatePVC: correct setting of read/only access
CreatePVC: correct setting of read/only access

Fixes #237

Also update the code to use the constant values for api.ReadWriteOnce
and api.ReadOnlyMany.

skippbox/kompose,kubernetes/kompose,rupalibehera/kompose,ngtuna/kompose,cdrage/kompose,ashetty1/kompose,gitlawr/kompose,cab105/kompose,gitlawr/kompose,kadel/kompose,containscafeine/kompose,cab105/kompose,rupalibehera/kompose,surajnarwade/kompose,ashetty1/kompose,rupalibehera/kompose,sebgoa/kompose,kubernetes/kompose,procrypt/kompose,kadel/kompose,sebgoa/kompose,containscafeine/kompose,skippbox/kompose,surajnarwade/kompose,procrypt/kompose,cdrage/kompose,ngtuna/kompose,gitlawr/kompose,cab105/kompose,skippbox/kompose,procrypt/kompose,ngtuna/kompose,sebgoa/kompose,surajnarwade/kompose,containscafeine/kompose,ashetty1/kompose