Fix seq record on "Specified" mode when using DOL0
Created by: gabrielfedel
Fix seq record on "Specified" mode when using DOL0 and add a test for it. Fix https://bugs.launchpad.net/epics-base/+bug/1842661
Created by: gabrielfedel
Fix seq record on "Specified" mode when using DOL0 and add a test for it. Fix https://bugs.launchpad.net/epics-base/+bug/1842661