Description of problem: cannot create a pod with projected volume plugin after 'oc login', pod can be created successful after add 'projected' in scc/restricted volume policy.


Version-Release number of selected component (if applicable):
oc v3.6.67
kubernetes v1.6.1+5115d708d7
features: Basic-Auth GSSAPI Kerberos SPNEGO

Server https://host-8-174-4.host.centralci.eng.rdu2.redhat.com:8443
openshift v3.6.67
kubernetes v1.6.1+5115d708d


How reproducible:
Always


Steps to Reproduce:
1. Login in by `oc login --server`, and create a new project

2. Create a secret and a configmap with below yaml:
$ cat secret.yaml
apiVersion: v1
kind: Secret
metadata:
  name: test-secret
data:
  data-1: dmFsdWUtMQ0K
  data-2: dmFsdWUtMg0KDQo=

$ cat configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: special-config
data:
  special.how: very
  special.type: charm

3. Try to create a pod with all-in-one volume
# cat allinone-normal-pod.yaml
apiVersion: v1
kind: Pod
metadata:
  name: allinone-normal
  labels:
    region: one
spec:
  containers:
  - name: allinone-normal
    image: redis
    resources:
      limits:
        cpu: "500m"
        memory: "256Mi"
    volumeMounts:
    - name: all-in-one
      mountPath: "/all-in-one"
      readOnly: true
  volumes:
  - name: all-in-one
    projected:
      sources:
      - secret:
          name: test-secret
          items:
            - key: data-1
              path: mysecret/my-username
            - key: data-2
              path: mysecret/my-passwd
      - downwardAPI:
          items:
            - path: mydapi/labels
              fieldRef:
                fieldPath: metadata.labels
            - path: mydapi/name
              fieldRef:
                fieldPath: metadata.name
            - path: mydapi/cpu_limit
              resourceFieldRef:
                containerName: allinone-normal
                resource: limits.cpu
                divisor: "1m"
      - configMap:
          name: special-config
          items:
            - key: special.how
              path: myconfigmap/shared-config
            - key: special.type
              path: myconfigmap/private-config

Actual results: 
3. Pod was created failed.
$ oc create -f allinone-permission-mode-pod.yaml
Error from server (Forbidden): error when creating "allinone-permission-mode-pod.yaml": pods "allinone-permission-mode" is forbidden: unable to validate against any security context constraint: [spec.containers[0].securityContext.volumes[0]: Invalid value: "projected": projected volumes are not allowed to be used]


Expected results: 
3. Pod should be created successful, and project secrets, configmap and downward API into the same volume with normal keys and path


addition info: 
Pod can be created successful after add 'projected' in scc/restricted volume policy. 
# oc get scc | grep "^restricted"
restricted         false     []        MustRunAs   MustRunAsRange     MustRunAs   RunAsAny    <none>     false            [configMap downwardAPI emptyDir persistentVolumeClaim projected secret]