[hop node] documentation update in execution_nodes for hop nodes

[thedoubl3j]

SUMMARY

Fixes #14050

I attempted to make it as similar as the Adding Execution Nodes section above it but not sure if we want to add more context around how to do things or where to add them but for now, added the diagram and a little blurb about them.

ISSUE TYPE

• Bug, Docs Fix or other nominal change

COMPONENT NAME

• Docs

AWX VERSION

devel

ADDITIONAL INFORMATION

[fosterseth]

looks good so far, I think we want to add some details around the peers and peers_from_control_nodes fields (what they are, how to set them)

[kurokobo]

Thanks for updating the docs!

Since the new receptor-collection will no longer use the Copr repository (it will just download and extract binary from release page), shouldn't this line be removed?

Note, the playbook will enable the Copr ansible-awx/receptor repository so that Receptor can be installed.

[kurokobo]

And as follow-up for #13287 and #13362, can you add a note for RHEL8-based nodes that describes receptor_dependencies in group_vars/all.yml should be modified to python39-pip instead of python3-pip?
The default python3-pip (updated in #14088) is applicable for only RHEL9, since python3-pip for RHEL8 is too old and causes error while install ansible-runner via pip.
Or should this be a different PR?

[thedoubl3j]

@kurokobo I think we might move that to a separate issue since this is a feature branch. I will open an issue and copy over the info you have pasted here for it and tag you to confirm everything we want fixed.