Adapt to new libimagstore::iter::Entries API
Adapt to new libimagstore::iter::Entries API

Use Entries::into_storeid_iter() for transforming iterator into right
type.

Signed-off-by: Matthias Beyer <1d6e1cf70ec6f9ab28d3ea4b27a49a77654d370e@beyermatthias.de>

matthiasbeyer/imag,matthiasbeyer/imag