Includes refactoring out interface inheritance hierarchy logic to a new
interface_utils file.
Bug: 137397100
Test: 'm' with an init_rc that misspells an interface in an
interface_start, interface_restart, or interface_stop line.
Change-Id: I9f650289d64ae2b13435a81e1693c7ab5e6e9ecf
Host init verifier already checks that the names and number of
arguments for builtins are correct, but it can check more. This
change ensures that property expansions are well formed, and that
arguments that can be parsed on the host are correct. For example it
checks that UIDs and GIDs exist, that numerical values can be parsed,
and that rlimit strings are correct.
Test: build
Change-Id: Ied8882498a88a9f8324db6b8d1020aeeccc8177b
Daniel Norman