staging: Add objstorage0 node
terraform apply output:
objstorage0_summary = hostname: objstorage0 fqdn: objstorage0.internal.staging.swh.network network: ip=192.168.130.110/24,gw=192.168.130.1 macaddrs=5E:28:EA:7D:50:0D
Related to T2682