remote: Save nodeps
remote: Save nodeps

flatpak_installation_modify_remote was not saving the nodeps
state. Found while writing FlatpakTransaction tests.

Closes: #2198
Approved by: alexlarsson

matthiasclasen/flatpak,flatpak/flatpak,flatpak/flatpak,matthiasclasen/flatpak,flatpak/flatpak,matthiasclasen/flatpak,matthiasclasen/flatpak,flatpak/flatpak,flatpak/flatpak,matthiasclasen/flatpak