Add calico/routereflector support

Add BGP route reflectors support in order to optimize BGP topology
for deployments with Calico network plugin.

Also bump version of calico/ctl for some bug fixes.

roles/network_plugin/calico/rr/meta/main.yml

@@ -0,0 +1,6 @@
+dependencies:
+  - role: kubernetes/secrets
+  - role: docker
+    when: ansible_os_family != "CoreOS"
+  - role: download
+    file: "{{ downloads.calico_rr }}"