k8s/control-plane: cleanup excessive defaulting

roles/kubernetes/control-plane/templates/kubeadm-config.v1beta3.yaml.j2

@@ -148,7 +148,7 @@ apiServer:
     profiling: "{{ kube_profiling }}"
     request-timeout: "{{ kube_apiserver_request_timeout }}"
     enable-aggregator-routing: "{{ kube_api_aggregator_routing }}"
-{% if kube_token_auth | default(true) %}
+{% if kube_token_auth %}
     token-auth-file: {{ kube_token_dir }}/known_tokens.csv
 {% endif %}
 {% if kube_apiserver_service_account_lookup %}
@@ -230,14 +230,14 @@ apiServer:
 {% if kube_apiserver_tracing %}
     tracing-config-file: {{ kube_config_dir }}/tracing/apiserver-tracing.yaml
 {% endif %}
-{% if kubernetes_audit or kube_token_auth | default(true) or kube_webhook_token_auth | default(false) or ( cloud_provider is defined and cloud_provider in ["openstack", "azure", "vsphere", "aws", "gce"] ) or apiserver_extra_volumes or ssl_ca_dirs | length %}
+{% if kubernetes_audit or kube_token_auth or kube_webhook_token_auth or ( cloud_provider is defined and cloud_provider in ["openstack", "azure", "vsphere", "aws", "gce"] ) or apiserver_extra_volumes or ssl_ca_dirs | length %}
   extraVolumes:
 {% if cloud_provider is defined and cloud_provider in ["openstack", "azure", "vsphere", "aws", "gce"] %}
   - name: cloud-config
     hostPath: {{ kube_config_dir }}/cloud_config
     mountPath: {{ kube_config_dir }}/cloud_config
 {% endif %}
-{% if kube_token_auth | default(true) %}
+{% if kube_token_auth %}
   - name: token-auth-config
     hostPath: {{ kube_token_dir }}
     mountPath: {{ kube_token_dir }}