Description of problem:
Evict pods failed, and get "message": "Resource was marked with kind Pod but was unable to be converted".

Version-Release number of selected component (if applicable):
openshift v3.4.0.16+cc70b72

How reproducible:
Always

Steps to Reproduce:
1.Try to evict existed pod by curl cmd, such as:
curl -k -v -X POST -H "Authorization: Bearer $(oc whoami -t)" -H 'Content-type: application/json' https://127.0.0.1:8443/api/v1/namespaces/default/pods/pod-5/eviction -d @eviction.json
{ 
  "apiVersion": "policy/v1alpha1", 
  "kind": "Eviction", 
  "metadata": { 
    "name": "pod-1", 
    "namespace": "default" 
  } 
} 


Actual results:
{
  "kind": "Status",
  "apiVersion": "v1",
  "metadata": {},
  "status": "Failure",
  "message": "Resource was marked with kind Pod but was unable to be converted",
  "reason": "BadRequest",
  "code": 400
}

Expected results:
No such messages return, the cmd should be run successful or fail.

Additional info: