CTS test for GWP-ASan.

Does not test the actual runtime behavior of GWP-ASan - the sampling
rate is too low to detect reliably. Instead, the test checks the
presence of GWP-ASan guarded memory mappings.

Bug: 149991821
Test: atest CtsGwpAsanTestCases

Change-Id: I4bb018390cb902d09d4d7fb111c59c76ffb6758e
15 files changed