tests/flatpak.py: make version for flatpak-runtime module consistent
tests/flatpak.py: make version for flatpak-runtime module consistent

The test data used one version for flatpak-runtime in one location
and a different version in a different location; avoid confusion
by making them the same.

Signed-off-by: Owen W. Taylor <ea9e9dc5381b1dcdec5e0e8197a67fa819b36a07@fishsoup.net>

DBuildService/atomic-reactor,fr34k8/atomic-reactor,fr34k8/atomic-reactor,projectatomic/atomic-reactor,projectatomic/atomic-reactor,DBuildService/atomic-reactor