Update references to "Configure Network" or "Set Hostname"

[bdunne]

These are replaced by system tools in EL9 Based on: https://github.com/ManageIQ/manageiq-appliance_console/pull/238

[miq-bot]

Checked commit https://github.com/bdunne/manageiq-documentation/commit/0ac300c1e6ffa8c84a79eacd014f61808a8fcab9 with ruby 2.7.8, rubocop 1.56.3, haml-lint 0.51.0, and yamllint 0 files checked, 0 offenses detected Everything looks fine. :cookie:

[miq-bot]

This pull request has been automatically marked as stale because it has not been updated for at least 3 months.

If these changes are still valid, please remove the stale label, make any changes requested by reviewers (if any), and ensure that this issue is being looked at by the assigned/reviewer(s).