init.rc: make sure netd start after post-fs-data

Current init doesn't order the triggeres it scaned, and there is no
guarantee that general event trigger exec first and then event+property
triggers.

This CL will make sure netd started after post-fs-data trigger is done.

Bug: 35110957
Test: marlin boots
Change-Id: I7bb55af4e00f336682388abfa8a06eac2136b7d4