[NEW] rancher2_cluster_v2 resource support for opentelekomcloud

Is your feature request related to a problem? Please describe.
Need to add support rancher2_cluster_v2

Additional context
Please check next docu:
https://registry.terraform.io/providers/rancher/rancher2/latest/docs/resources/cluster_v2

Need to add rancher2_cluster_v2 for opentelekomcloud, i assume that we can reuse some part of openstack code