Add crash_reporter_tests to the whitelist

Add crash_reporter_tests to the whitelist.  It needs to be run
as root due to some of the file and folder permissions used
by crash_reporter.

Bug: 26663796
Change-Id: I3b171466954c1df9f1aa0ee6a85acaec65e8b03c
Test: brillo_WhitelistedGtests runs the tests and they pass.
1 file changed