docs: added documentation on multi-domain setups.
Description
Adds documentation on setting up multiple-domains that point to the same instance.
Supporting information
Testing instructions
Proofread the changes.
Checklist
If any of the items below is not applicable, do not remove them, but put a check in it.
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All providers include the new feature/change -
All affected providers can provision new clusters -
Unit tests are added/updated -
Documentation is added/updated -
The TOOLS_CONTAINER_IMAGE_VERSIONin ci_vars.yml is updated -
The grove-template repository is updated
Edited by Keith Grootboom