waitforrebootcompute: fix vmip extraction
waitforrebootcompute: fix vmip extraction

nova_fixed network -> fixed network

SUSE-Cloud/automation,SUSE-Cloud/automation,gosipyan/automation,vmoravec/automation,aspiers/automation,SUSE-Cloud/automation,gosipyan/automation,aspiers/automation,vmoravec/automation,vmoravec/automation,gosipyan/automation,aspiers/automation,vmoravec/automation,gosipyan/automation,SUSE-Cloud/automation,aspiers/automation