Update networks.json for crossroads host profile addition.

[brugger1]

Description

I forgot to run regenerate networks.json after adding a host profile for crossroads. This pull request addresses that.

Type of change

• [X] New feature~~

How Has This Been Tested?

I ran python3 dump_dir_to_networks_json.py and inspected the changes.

Reminders:

• Please follow the style guidelines of this project.
• Please perform a self-review of your code before submitting a PR and asking others to review it.
• Please assign reviewers (see VisIt's PR procedures for more information).

Checklist:

• [ ] I have commented my code where applicable.
• [ ] I have updated the release notes.
• [ ] I have made corresponding changes to the documentation.
• [ ] I have added debugging support to my changes.
• [ ] I have added tests that prove my fix is effective or that my feature works.
• [ ] I have confirmed new and existing unit tests pass locally with my changes.
• [ ] I have added new baselines for any new tests to the repo.
• [X] I have NOT made any changes to protocol or public interfaces in an RC branch.~~