Description of problem: If either NovaLibvirtNetwork or NovaColdMigrationNetwork is missing from ServiceNetMap, IPs are missing from the hieradata, which results in an invalid sshd_config on compute nodes. Version-Release number of selected component (if applicable): openstack-tripleo-heat-templates-2.0.0-55.el7ost How reproducible: I could not reproduce but this. Actual results: SSH to compute nodes fails until the missing value are add and the stack is updated. Expected results: Validation should chatch the bad input and fail immediately instead of modified the sshd_config. Additional info: Forked from https://bugzilla.redhat.com/show_bug.cgi?id=1463680