Bug 1598457 [wpt PR 20374] - Update wpt metadata, a=testonly

wpt-pr: 20374 wpt-type: metadata
2019-11-22 09:01:52 +00:00 · 2019-11-22 09:01:52 +00:00 · 69e987c304
--- a/testing/web-platform/meta/intersection-observer/v2/position-relative.html.ini
+++ b/testing/web-platform/meta/intersection-observer/v2/position-relative.html.ini
@ -0,0 +1,4 @@
+[position-relative.html]
+  [First rAF.]
+    expected: FAIL
+