Disable ParameterRestrictions.ptrace_setregs_blocked

TBR: jorgelo@chromium.org
Bug: 936576
Change-Id: I83cada3c08e3cf1ba46d915d090071670f7de4bb
Reviewed-on: https://chromium-review.googlesource.com/c/1492427Reviewed-by: Ella Ge <eirage@chromium.org>
Commit-Queue: Ella Ge <eirage@chromium.org>
Cr-Commit-Position: refs/heads/master@{#636173}

sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions_unittests.cc

@@ -449,7 +449,7 @@ BPF_TEST_C(ParameterRestrictions,
 }
 
 BPF_TEST_C(ParameterRestrictions,
-           ptrace_setregs_blocked,
+           DISABLED_ptrace_setregs_blocked,
            RestrictPtracePolicy) {
   auto tracer = [](pid_t pid) {
 #if defined(__arm__)