[test] Skip non-default testing variants for test262 and asan

This is a noop right now as we run test262 without variants on asan.

We'll use the status file to whitelist the variants in a synchronous way in v8 after the infra change lands to activate them.

Bug: chromium:710428
NOTRY=true

Change-Id: I146bbc648775ef0e250c16695b956ecd1d6e105e
Reviewed-on: https://chromium-review.googlesource.com/474845
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Daniel Ehrenberg <littledan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44574}

test/test262/test262.status

@@ -727,6 +727,11 @@
   'built-ins/Promise/prototype/then/deferred-is-resolved-value': [SKIP],
 }],  # asan == True
 
+['variant != default and asan', {
+  # BUG(chromium:710428).
+  '*': [SKIP],
+}],  # variant != default and asan
+
 ['asan == True or msan == True or tsan == True', {
   # https://bugs.chromium.org/p/v8/issues/detail?id=4639
   # The failed allocation causes an asan/msan/tsan error