[Release 1.21] Enable dual-stack on canal cni

[manuelbuil]

Backport: #2342

[mdrahman-suse]

Verified in rke2 with Release v1.21.9-rc1+rke2r1 by following the steps mentioned in #2342 (comment)

Version

rke2 version v1.21.9-rc1+rke2r1 (e48f07f7b208c0e43c537fca006cd5b6ce31b13b)
go version go1.16.10b7

• Config.yaml

write-kubeconfig-mode: 644
token: secret
cluster-cidr: 10.42.0.0/16,2001:cafe:42:0::/56
service-cidr: 10.43.0.0/16,2001:cafe:42:1::/112
cni: canal
node-ip: <private_ipv4>,<ip_v6>

• Pods have two ips, ipv4, ipv6

kubectl get pod httpd-deployment-9cb66bdcb-ccgsf -o yaml |grep -w ip
  nodeName: ip-192-168-1-102
  - ip: 10.42.0.16
  - ip: 2001:cafe:42::10

• Validated basic functionality works
• Calico image version

kubectl describe pod -n kube-system rke2-canal-m8q2g |grep Image
    Image:         rancher/hardened-calico:v3.20.3-build20220114