add ability to specify default LB when using ipvs

kubespray/inventory/group_vars/k8s_cluster/k8s-cluster.yml

@@ -123,6 +123,7 @@ kube_apiserver_port: 6443  # (https)
 # Kube-proxy proxyMode configuration.
 # Can be ipvs, iptables
 kube_proxy_mode: ipvs
+kube_proxy_scheduler: lc
 
 # configure arp_ignore and arp_announce to avoid answering ARP queries from kube-ipvs0 interface
 # must be set to true for MetalLB, kube-vip(ARP enabled) to work
@@ -404,7 +405,6 @@ kubeadm_patches:
   enabled: false
   source_dir: "{{ inventory_dir }}/patches"
   dest_dir: "{{ kube_config_dir }}/patches"
-
 ## Kubelet additional settings
 kubelet_custom_flags:
-  - "--root-dir=/app/k8s/kubelet"
+  - "--root-dir=/app/k8s/kubelet"