Migrate inventory to the admin vlan

Plan:

• Update the inventory accordingly (new ip, depreciate the old ip)
• infra/puppet/puppet-swh-site!473: Update the puppet configuration
• On pergamon:
  • Stop puppet agent
• On bojimans:
  • Stop puppet agent
  • Update the ip to the new vlan442 ip (192.168.50.60)
    • either terraform manifest if possible or directly through the proxmox ui
    • connect through ssh and adapt /etc/network/interfaces
    • also adapt hardware entry about network (proxmox ui) to change from vmbr0 to vmbr442
  • Update the hostname to bojimans.i.a.s.n
  • Remove the puppet certificates
  • Update the facts /etc/facter/facts.d/deployment.yaml to admin
  • poweroff + start back
  • Run puppet with puppet agent --test --fqdn bojimans.internal.admin.swh.network
• on pergamon:
  • Run puppet agent
  • Decommission bojimans.i.s.o certificate
• open firewall rule to allow traffic to the inventory node
• Install necessary fact for cloud-init to stop tampering with /etc/hosts
• Update inventory with reserved ip (rattach such ip to bojimans) [1]

Optionally:

• Reference bojimans in our sysadm terraform admin manifest.

• [1] https://inventory.internal.admin.swh.network/virtualization/virtual-machines/74/

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Migrated from T3873 (view on Phabricator)