
If using Bifrost to build images via diskimage-builder, the dib_os_release variable can be used to specify the DIB_RELEASE environment variable. However, if the dib_os_release variable is unset, image creation will fail. This change sets the dib_env_vars_final variable unconditionally to ensure that it is always defined when accessed. Change-Id: If32b2ebc13fe521e986ed6593fd3a8b99ec90567 Closes-Bug: #1665671