Add a CTS test for memory tagging.

Test that memory tagging is disabled in regular apps, and that the
compatibility flag works.

Bug: 135772972
Exempt-From-Owner-Approval: cherry-pick from internal
Change-Id: I043544f9c02a68bfebde924661a0c6a67a43b177
Merged-In: I043544f9c02a68bfebde924661a0c6a67a43b177
10 files changed