Update config.toml.j2 (#8340) (#8602)

* Update config.toml.j2

i think this commit code is not completed works

exam registry address : a.com:5000

insecure registry must be http://a.com:5000

but this code add insecure a.com:5000 (without http://)

If there is no http, containerd accesses with https even if insecure_skip_verify = true

solution is code edit

* Update config.toml.j2

* Update containerd.yml

* Update containerd.yml

* Update containerd.yml

* Update config.toml.j2

(cherry picked from commit dda557ed23)

Co-authored-by: Choi Yongbeom <59861163+mircyb@users.noreply.github.com>

inventory/sample/group_vars/all/containerd.yml

@@ -33,10 +33,11 @@
 ## An obvious use case is allowing insecure-registry access to self hosted registries.
 ## Can be ipaddress and domain_name.
 ## example define mirror.registry.io or 172.19.16.11:5000
+## set "name": "url". insecure url must be started http://
 ## Port number is also needed if the default HTTPS port is not used.
 # containerd_insecure_registries:
-#   - mirror.registry.io
-#   - 172.19.16.11:5000
+#   "localhost": "http://127.0.0.1"
+#   "172.19.16.11:5000": "http://172.19.16.11:5000"
 
 # containerd_registries:
 #   "docker.io": "https://registry-1.docker.io"