170ebad1db
Ironic now provides DIB-built CentOS images at https://tarballs.openstack.org/ironic-python-agent/dib/files. However, if Bifrost is configured to use these, then the 'kayobe seed service deploy' command fails because the checksum files are not available. This change fixes the issue by allowing 'kolla_bifrost_ipa_kernel_checksum_url' and 'kolla_bifrost_ipa_ramdisk_checksum_url' to be overridden to empty strings, indicating that there is no checksum. Very similar to the issue fixed in https://review.opendev.org/688359 for the overcloud. Change-Id: If73cebb95c7d0596dc8087112fc19398a113f0cc Story: 2006715 Task: 37407