* restore proper lowercase/plural CRD resource

This commit restores the proper resource string
"customresourcedefinitions" for CRD. The prior change to
"CustomResourceDefinition" was made because this was being used
in another place to populate the CRD "Kind" field in
remap_crd_version_action.go -- there, just use the correct Kind
string instead of pulling from Resource.
Signed-off-by: Scott Seago <sseago@redhat.com>

* add changelog
Signed-off-by: Scott Seago <sseago@redhat.com>