Description of problem:
--dry-run param does not take effect for kubefedctl federate --enable-type

Version-Release number of selected component (if applicable):
kubefedctl version: version.Info{Version:"v4.2.0", GitCommit:"b8ae65cee603cc9c746911debd3dc23b922222d8", GitTreeState:"clean", BuildDate:"2019-08-08T18:18:54Z", GoVersion:"go1.12.6", Compiler:"gc", Platform:"linux/amd64"}


How reproducible:
100%

Steps to Reproduce:
1. $ kubefedctl federate ns test-namespace --dry-run --kubefed-namespace=federation-system
F0812 16:46:15.374128    7450 federate.go:150] Error: federatedtypeconfigs.core.kubefed.io "namespaces" not found. Consider using '--enable-type' to optionally enable type while federating the resource
2. $ kubefedctl federate ns test-namespace --dry-run --kubefed-namespace=federation-system -e
customresourcedefinition.apiextensions.k8s.io/federatednamespaces.types.kubefed.io created
federatedtypeconfig.core.kubefed.io/namespaces created in namespace federation-system
I0812 16:46:39.848375    7470 federate.go:459] Resource to federate is a namespace. Given namespace will itself be the container for the federated namespace
I0812 16:46:39.848703    7470 federate.go:488] Successfully created FederatedNamespace "test-namespace/test-namespace" from Namespace


Actual results:
federatedtypeconfig resource and federatednamespaces crd are created
$ oc get crd|grep federatednamespace
federatednamespaces.types.kubefed.io                        2019-08-12T08:46:38Z
$ oc get federatedtypeconfig -n federation-system
NAME                                     AGE
namespaces                               27s


Expected results:
Do not make any server request.

Additional info: