Fix YAML indentation issue (#7556)

`http-snippet:|` does not work for kubernetes 1.21.4, it requires extra space: ``http-snippet: |`

deploy/static/provider/aws/deploy-tls-termination.yaml

@@ -37,7 +37,7 @@ metadata:
   name: ingress-nginx-controller
   namespace: ingress-nginx
 data:
-  http-snippet:|
+  http-snippet: |
     server{
       listen 2443;
       return 308 https://$host$request_uri;