Override controllers with the correct value in noendpoints job

kubeadm requires the (non-default) bootstrapsigner and tokencleaner
controllers to be enabled, and if you override the value, you have to
include those yourself.

Author: danwinship

experiment/kind-noendpoints-e2e.sh

@@ -181,7 +181,7 @@ kubeadmConfigPatches:
 ${apiServer_extra_args}
   controllerManager:
     extraArgs:
-      controllers: "-endpoints-controller,-endpointslice-mirroring-controller,*"
+      controllers: "-endpoints-controller,-endpointslice-mirroring-controller,*,bootstrapsigner,tokencleaner"
 ${controllerManager_extra_args}
   scheduler:
     extraArgs: