Support ipv4/ipv6 dual stack.

[VinceCui]

Issue Description

Type: feature request

Describe what feature you want

With the popularity of ipv6, the demand to support ipv6 has become stronger. I hope the following scenarios can be satisfied:

1. All machines communicate within the cluster using ipv4
2. All machines communicate within the cluster using ipv6
3. All machines have ipv4/ipv6 at the same time, users can choose whether to use ipv4 or ipv6 to communicate within the cluster
4. CNI and kube-proxy support ipv4, ipv6 and dual stack.

At the same time, I don't want to configure both ip for each machine in the ClusterFile when I use dual stacks, which is very troublesome to use, and it's best to automatically identify them.

Additional context

Add any other context or screenshots about the feature request here.

[VinceCui]

I think need to do these works to satisfy this case:

1. ClusterFile ip support ipv6
2. When ip assigned by ipv6, kubernetes is deployed in ipv6 mode
3. Expose an env like IPv6DualStack, if true, kubernetes is deployed in dual stack mode, and the version assgined in ClusterFile ip is prefered.
4. CNI should support ipv4, ipv6 and dual stack.
5. kubernetes components enable IPv6DualStack mode
6. lvscare support ipv6