Update generator settings

Author: tux-rampage

settings

@@ -15,13 +15,13 @@
 # limitations under the License.
 
 # kubernetes-client/gen commit to use for code generation.
-export GEN_COMMIT=9f439b6
+export GEN_COMMIT=9563227
 
 # GitHub username/organization to clone kubernetes repo from.
 export USERNAME=kubernetes
 
 # Kubernetes branch/tag to get the OpenAPI spec from.
-export KUBERNETES_BRANCH="v1.15.10"
+export KUBERNETES_BRANCH="v1.18.0"
 
 # client version for packaging and releasing. It can
 # be different than SPEC_VERSION.