Add Kubelet config, remove deprecated flags and fix minor bugs (#4724)

* Add kubelet config

* Change kubelet_authorization_mode_webhook to true

* Fix lint

* Sync env file

* Refactor the kubernetes node folder

* Remove deprecated flag and fix lint

roles/kubernetes/node/templates/kubelet-config.v1beta1.yaml.j2

@@ -0,0 +1,57 @@
+apiVersion: kubelet.config.k8s.io/v1beta1
+kind: KubeletConfiguration
+nodeStatusUpdateFrequency: "{{ kubelet_status_update_frequency }}"
+failSwapOn: {{ kubelet_fail_swap_on|default(true) }}
+authentication:
+  anonymous:
+    enabled: false
+  webhook:
+    enabled: {{ kubelet_authentication_token_webhook }}
+  x509:
+    clientCAFile: {{ kube_cert_dir }}/ca.crt
+authorization:
+{% if kubelet_authorization_mode_webhook %}
+  mode: Webhook
+{% else %}
+  mode: AlwaysAllow
+{% endif %}
+{% if kubelet_enforce_node_allocatable is defined and kubelet_enforce_node_allocatable != "\"\"" %}
+{% set kubelet_enforce_node_allocatable_list = kubelet_enforce_node_allocatable.split() %}
+enforceNodeAllocatable:
+{% for item in kubelet_enforce_node_allocatable_list %}
+- {{ item }}
+{% endfor %}
+{% endif %}
+staticPodPath: {{ kube_manifest_dir }}
+cgroupDriver: {{ kubelet_cgroup_driver|default(kubelet_cgroup_driver_detected) }}
+maxPods: {{ kubelet_max_pods }}
+address: {{ kubelet_bind_address }}
+readOnlyPort: {{ kube_read_only_port }}
+kubeletCgroups: {{ kubelet_kubelet_cgroups }}
+clusterDomain: {{ dns_domain }}
+{# DNS settings for kubelet #}
+{% if enable_nodelocaldns %}
+{% set kubelet_cluster_dns = [nodelocaldns_ip] %}
+{% elif dns_mode in ['coredns'] %}
+{% set kubelet_cluster_dns = [skydns_server] %}
+{% elif dns_mode == 'coredns_dual' %}
+{% set kubelet_cluster_dns = [skydns_server,skydns_server_secondary] %}
+{% elif dns_mode == 'manual' %}
+{% set kubelet_cluster_dns = [manual_dns_server] %}
+{% else %}
+{% set kubelet_cluster_dns = [] %}
+{% endif %}
+clusterDNS:
+{% for dns_address in kubelet_cluster_dns %}
+- {{ dns_address }}
+{% endfor %}
+{# Node reserved CPU/memory #}
+kubeReserved:
+{% if is_kube_master|bool %}
+  cpu: {{ kube_master_cpu_reserved }}
+  memory: {{ kube_master_memory_reserved|regex_replace('Mi', 'M') }}
+{% else %}
+  cpu: {{ kube_cpu_reserved }}
+  memory: {{ kube_memory_reserved|regex_replace('Mi', 'M') }}
+{% endif %}
+resolvConf: "{{ kube_resolv_conf }}"