User Story:

When configuring dual-stack networking on AWS, we need provide the NodeIPFamilies field to the ConfigMap openshift-config/cloud-provider-config.

This instructs the AWS CCM to consider IPv6 addresses in the node network interface, if any. If not configured, the CCM will only consider the node's IPv4 address. This causes nodes to have only IPv4 and new host-network pods will only pick up the node's IPv4 address.

In dual-stack environment, the CCM AWS provider expects NodeIPFamilies (kubernetes/cloud-provider-aws#638) to be in the format:

DualStackIPv4Primary:

[Global]
NodeIPFamilies=ipv4
NodeIPFamilies=ipv6

DualStackIPv6Primary:

[Global]
NodeIPFamilies=ipv6
NodeIPFamilies=ipv4 

Acceptance Criteria:

Description of criteria:

• Configure NodeIPFamilies as two entries. Each defines the IP family as above description.

(optional) Out of Scope:

Detail about what is specifically not being delivered in the story

Engineering Details:

• https://github.com/openshift/installer/blob/c573c82a4f2ed6dd3c14da696cf0a4cad9e4d97e/pkg/asset/manifests/cloudproviderconfig.go#L120-L121 

This requires/does not require a design proposal.
This requires/does not require a feature gate.