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/templates/calico-rr.env.j2

@@ -0,0 +1,6 @@
+ETCD_ENDPOINTS="{{ etcd_access_endpoint }}"
+ETCD_CA_CERT_FILE="{{ calico_cert_dir }}/ca_cert.crt"
+ETCD_CERT_FILE="{{ calico_cert_dir }}/cert.crt"
+ETCD_KEY_FILE="{{ calico_cert_dir }}/key.pem"
+IP="{{ rr_ip }}"
+IP6=""

roles/network_plugin/calico/rr/templates/calico-rr.service.j2

@@ -0,0 +1,27 @@
+[Unit]
+Description=calico-rr
+After=docker.service
+Requires=docker.service
+
+[Service]
+EnvironmentFile=/etc/calico/calico-rr.env
+ExecStartPre=-/usr/bin/docker rm -f calico-rr
+ExecStart=/usr/bin/docker run --net=host --privileged \
+ --name=calico-rr \
+ -e IP=${IP} \
+ -e IP6=${IP6} \
+ -e ETCD_ENDPOINTS=${ETCD_ENDPOINTS} \
+ -e ETCD_CA_CERT_FILE=${ETCD_CA_CERT_FILE} \
+ -e ETCD_CERT_FILE=${ETCD_CERT_FILE} \
+ -e ETCD_KEY_FILE=${ETCD_KEY_FILE} \
+ -v /var/log/calico-rr:/var/log/calico \
+ -v {{ calico_cert_dir }}:{{ calico_cert_dir }}:ro \
+ {{ calico_rr_image_repo }}:{{ calico_rr_image_tag }}
+
+Restart=always
+RestartSec=10s
+
+ExecStop=-/usr/bin/docker stop calico-rr
+
+[Install]
+WantedBy=multi-user.target