Add support calico kubernetes datastore and typha. (#4498)

* Add support calico kubernetes datastore and typha.

* Add typha_enabled to kubespray-defaults.

roles/download/defaults/main.yml

@@ -49,6 +49,7 @@ calico_ctl_version: "v3.4.4"
 calico_cni_version: "v3.4.0"
 calico_policy_version: "v3.4.0"
 calico_rr_version: "v0.6.1"
+calico_typha_version: "v3.4.4"
 
 flannel_version: "v0.11.0"
 flannel_cni_version: "v0.3.0"
@@ -181,6 +182,8 @@ calico_policy_image_repo: "docker.io/calico/kube-controllers"
 calico_policy_image_tag: "{{ calico_policy_version }}"
 calico_rr_image_repo: "docker.io/calico/routereflector"
 calico_rr_image_tag: "{{ calico_rr_version }}"
+calico_typha_image_repo: "docker.io/calico/typha"
+calico_typha_image_tag: "{{ calico_typha_version }}"
 pod_infra_image_repo: "gcr.io/google_containers/pause-{{ image_arch }}"
 pod_infra_image_tag: "{{ pod_infra_version }}"
 install_socat_image_repo: "docker.io/xueshanf/install-socat"
@@ -434,6 +437,15 @@ downloads:
     groups:
       - calico-rr
 
+  calico_typha:
+    enabled: "{{ typha_enabled == 'calico' }}"
+    container: true
+    repo: "{{ calico_typha_image_repo }}"
+    tag: "{{ calico_typha_image_tag }}"
+    sha256: "{{ calico_typha_digest_checksum|default(None) }}"
+    groups:
+      - k8s-cluster
+
   weave_kube:
     enabled: "{{ kube_network_plugin == 'weave' }}"
     container: true