start netd earlier

In this change we're moving the asynchronous netd startup ahead of
the async statd and *synchronous* update_verifier.

This is desirable as we want a netd failure (which could
happen due to some mainline incompatibility wrt. bpf
or mainline shipped shared libs: resolver or netd updatable)
to be considered a signal for a bad boot.

It's still asynchronous though, so it's not ideal.

Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: Ib3e252f085f569864feddaf20ac80858a3bb969d