Add proxy support to containerd, improves no_proxy (#5583) (#5830)

* containerd: add proxy support

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

* kubespray-defaults: add kube_service_addresses / kube_pods_subnet to no_proxy

CIDR notation in no_proxy is supported by a lot of programs/languages,
including go: https://github.com/golang/go/issues/16704
Without that containerd cannot talk the the API server (kube_apiserver_ip),
but it should not go through an external proxy for the nodes/pods/services

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>
(cherry picked from commit 9f2dd09628)

roles/kubespray-defaults/defaults/main.yaml

@@ -416,7 +416,7 @@ no_proxy: >-
   {%- if additional_no_proxy is defined -%}
   {{ additional_no_proxy }},
   {%- endif -%}
-  127.0.0.1,localhost
+  127.0.0.1,localhost,{{kube_service_addresses}},{{kube_pods_subnet}}
   {%- endif %}
 
 proxy_env: