add working with jinja templates chapter

[nishaaaaaant]

Author checklist (Completed by original Author)

• Good fit for the Rocky Linux project? Title and Author Metatags inserted ?
• If applicable, steps and instructions have been tested to work
• Initial self-review to fix basic typos and grammar completed

Rocky Documentation checklist (Completed by Rocky team)

• 1st Pass (Document is good fit for project and author checklist completed)
• 2nd Pass (Technical Review - check for technical correctness)
• 3rd Pass (Detailed Editorial Review and Peer Review)
• Final approval (Final Review)

[github-actions]

Test results for 007a08f:

Number of broken URLs: 1

URL,RESULT,FILENAME
 https://www.linode.com/docs/guides/beginners-guide-to-lxd-reverse-proxy,failed,guides/containers/lxd_web_servers.md

[sspencerwire]

@alemorvan Please review this addition to the Ansible book provided by @nishaaaaaant . It looks to be a valuable addition. We may need to change some formatting so that it matches up to the original formatting used in the Ansible book, but that is a trivial addition after the initial merge. Take a look and see what you think.

[alemorvan]

Good job, thx !