fix expand_alias with NEVER_ASK=1

Even if we shouldn't interact with the user, we should still
resolve the alias if we already know a value for it.

Please merge and push a bugfix release!
This bug removes all stored optional_depends selections
for aliases with each `lin moonbase`.
Merge pull request #96 from v4hn/fix_expand_alias

fix expand_alias with NEVER_ASK=1