I know what you want to configure, but I can't find any question in the text. In case you have problems, describe them. In case you have error messages, add them to your original post.
Here are my questions back to you:
What exactly do you need help with?
What do you mean by "unable to get spice console"?
What is 10.1.75.20? Is it different from
controller?
Have you tried the precise instructions at
https://docs.openstack.org/nova/late...#spice-console, where
server_listen and
server_proxyclient_address are both set to 127.0.0.1?
Is any process listening at port 6082?
What have you found in Nova's logs?
Also, please surround your code with code tags like this
[code]... your code ...[/code]
for better readability.