Allow getrlimit/ugetrlimit syscalls in tests.

The fdsan code uses getrlimit/ugetrlimit so need to allow that when
running the debuggerd unit tests.

Bug: 141045754

Test: Ran the offending tests hundreds of times without failure.
Change-Id: Iece94f03e7895d61ca8a8f3ab17dce7e54ddf9cd
1 file changed