cmd/dist: add asan tests for global objects in testsanitizers package

cmd/dist: add asan tests for global objects in testsanitizers package

Add tests to test that -asan in Go can detect the error memory access
to the global objects.

Updates #44853.

Change-Id: I612a048460b497d18389160b66e6f818342d3941
Reviewed-on: https://go-review.googlesource.com/c/go/+/321716
Run-TryBot: Fannie Zhang <Fannie.Zhang@arm.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>