flimflam: Set correct service state for static IP

Some IPConfigs immediately set the service to the "READY"
state.  Do not revert the service to the "CONFIGURING" state.

BUG=chromium-os:29050
TEST=Manual:
Mark an Ethernet connection as static IP and ensure we
stay connected (actually we quickly bounce back to connected)

Change-Id: Id23706e3a223af2404ecc681e3a9f86d39c5c73a
Reviewed-on: https://gerrit.chromium.org/gerrit/20691
Reviewed-by: Sam Leffler <sleffler@chromium.org>
Commit-Ready: Paul Stewart <pstew@chromium.org>
Tested-by: Paul Stewart <pstew@chromium.org>
3 files changed