sanitizer-common: fix buildbot by temporarily disabling release_to_os test for tsan

This has been causing substantial redness in the buildbots e.g.,
https://lab.llvm.org/buildbot/#/builders/239/builds/2405
which already contained a commit to deflake the test
(3afd1b2).
Temporarily disabling the test to prevent this error from
hiding other potential problems.

Author: thurstond

compiler-rt/test/sanitizer_common/TestCases/Linux/release_to_os_test.cpp

@@ -1,6 +1,9 @@
 // RUN: %clangxx %s -o %t
 // RUN: env %tool_options=allocator_release_to_os_interval_ms=-1 %run %t
 
+// Temporarily disable test
+// UNSUPPORTED: tsan
+
 // Not needed, no allocator.
 // UNSUPPORTED: ubsan