Settings: Network config: refresh properties after configure

After network properties are configured they need to be
refreshed so that the 'Connectable' (and other) properties
are updated.

BUG=814939

Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I586e08671ecd77f91c5084f3b726012d9c447c7f
Reviewed-on: https://chromium-review.googlesource.com/938741
Reviewed-by: Toni Barzic <tbarzic@chromium.org>
Commit-Queue: Steven Bennetts <stevenjb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#539668}
2 files changed