+export Hostname=${Hostname:-""}
+export FreeIPAIP=${FreeIPAIP:-""}
+export DirectoryManagerPassword=${DirectoryManagerPassword:-""}
+export AdminPassword=${AdminPassword:-""}
+export UndercloudFQDN=${UndercloudFQDN:-""}
+export HostsSecret=${HostsSecret:-""}
+export ProvisioningCIDR=${ProvisioningCIDR:-""}
+export UsingNovajoin=${UsingNovajoin:-""}
+