scripts/osv: Respect allow_symlink flag in filemap

The module definitions specify if symlinks are allowed or not and we
need to respect that. Fixes default image bootup problem because of a
broken symlink.

Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
apps: update to latest

Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
Merge branch 'stable/v0.14'