add support for EventRateLimit plugin configuration (#8711)

* feat: add support for EventRateLimit admission plugin

* docs: add documentation about admission_control_config_file and EventRateLimit configuration

roles/kubernetes/control-plane/templates/admission-controls.v1beta2.yaml.j2

@@ -0,0 +1,9 @@
+apiVersion: apiserver.config.k8s.io/v1
+kind: AdmissionConfiguration
+plugins:
+{% for plugin in kube_apiserver_enable_admission_plugins[0].split(',') %}
+{% if plugin in kube_apiserver_admission_plugins_needs_configuration %}
+- name: {{ plugin }}
+  path: {{ kube_config_dir }}/{{ plugin|lower }}.yaml
+{% endif %}
+{% endfor %}