94b91727a2
This change improves the configuration of Ironic's pin_release_version setting by: 1. Renaming the variable from openstack_previous_release_name to ironic_pin_release_version to better reflect its purpose 2. Making the setting optional by default 3. Adding proper documentation explaining when to use this setting See: https://docs.openstack.org/ironic/latest/configuration/config.html#DEFAULT.pin_release_version Change-Id: Iaecc2a5999ff1dbc5abf56d400f9b9ac5293d1d7