Allow Calico version customization (with default v3.3)
Allow Calico version customization (with default v3.3)

Specifically, allowing the version to be customized is useful when using
kubeadm-dind-cluster to test our master code, including master
manifests, that hasn't been released yet.  That can be done by setting
CALICO_VERSION=master.

Note:

- Calico master (post v3.3) doesn't need a separate RBAC manifest.

- Also install calicoctl, so it's ready for use.

Mirantis/kubeadm-dind-cluster