Add Norwegian openstack instances

[korbinib]

Link to the page of interest
https://rdmkit.elixir-europe.org/no_resources

Describe what you would change to the page
Adding openstack instances:
https://nrec.no/
https://www.ntnu.no/wiki/spaces/skyhigh/overview

List the tool(s)or resource(s) that are missing on the page (if applicable)

• Name: NREC

• Link: https://nrec.no/

• Description: UiB/UiO openstack environments

• Name: SkyHigh,...

• Link: https://nrec.no/

• Description: NTNU openstack environments