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Launching test VMs can take a while, and grenade can fail if the VM's networking is not quite online in under sixty seconds. As such, it is reasonable to use a larger window so the failure rate of ironic-grenade will hopefully decline. Depends-On: https://review.opendev.org/c/openstack/grenade/+/879674 Change-Id: I07aead4b09ccb7e427a0d3d04e7a580cf4b00a95