loosen import restrictions around OAuth CRs validation

Author: stlaz

hack/import-restrictions.json

@@ -151,6 +151,8 @@
       "github.com/openshift/origin/pkg/apiserver/authentication/oauth",
       "github.com/openshift/origin/pkg/oauth/apis/oauth/validation",
 
+      "github.com/openshift/origin/pkg/admission/customresourcevalidation/oauth",
+
       "github.com/openshift/origin/pkg/cmd/openshift-integrated-oauth-server",
       "github.com/openshift/origin/pkg/cmd/openshift-kube-apiserver/openshiftkubeapiserver",
       "github.com/openshift/origin/pkg/cmd/server/origin",