Rename metadata directories

This renames:
 - `tests/wpt/metadata` → `tests/wpt/meta-legacy-layout`
 - `tests/wpt/metadata-layout-2020` → `tests/wpt/meta`
 - `tests/wpt/mozilla/meta` → `tests/wpt/mozilla/meta-legacy-layout`
 - `tests/wpt/mozilla/meta-layout-2020` → `tests/wpt/mozilla/meta`

tests/wpt/meta-legacy-layout/css/css-images/parsing/object-position-computed.html.ini

@@ -0,0 +1,97 @@
+[object-position-computed.html]
+  [Property object-position value '-20% -30px' computes to '-20% -30px']
+    expected: FAIL
+
+  [Property object-position value 'center center' computes to '50% 50%']
+    expected: FAIL
+
+  [Property object-position value '10% center' computes to '10% 50%']
+    expected: FAIL
+
+  [Property object-position value 'center bottom' computes to '50% 100%']
+    expected: FAIL
+
+  [Property object-position value '40px top' computes to '40px 0%']
+    expected: FAIL
+
+  [Property object-position value 'center top' computes to '50% 0%']
+    expected: FAIL
+
+  [Property object-position value 'right 20% bottom 10%' computes to '80% 90%']
+    expected: FAIL
+
+  [Property object-position value 'right bottom' computes to '100% 100%']
+    expected: FAIL
+
+  [Property object-position value 'center 50px' computes to '50% 50px']
+    expected: FAIL
+
+  [Property object-position value 'left bottom' computes to '0% 100%']
+    expected: FAIL
+
+  [Property object-position value 'left center' computes to '0% 50%']
+    expected: FAIL
+
+  [Property object-position value '30px center' computes to '30px 50%']
+    expected: FAIL
+
+  [Property object-position value 'right 40%' computes to '100% 40%']
+    expected: FAIL
+
+  [Property object-position value 'center' computes to '50% 50%']
+    expected: FAIL
+
+  [Property object-position value 'right 30% top 60px' computes to '70% 60px']
+    expected: FAIL
+
+  [Property object-position value 'right 20px bottom 10px' computes to 'calc(100% - 20px) calc(100% - 10px)']
+    expected: FAIL
+
+  [Property object-position value '-20% -30px']
+    expected: FAIL
+
+  [Property object-position value 'right 40%']
+    expected: FAIL
+
+  [Property object-position value '30px center']
+    expected: FAIL
+
+  [Property object-position value 'center 50px']
+    expected: FAIL
+
+  [Property object-position value '40px top']
+    expected: FAIL
+
+  [Property object-position value 'right 30% top 60px']
+    expected: FAIL
+
+  [Property object-position value 'right 20px bottom 10px']
+    expected: FAIL
+
+  [Property object-position value 'left bottom']
+    expected: FAIL
+
+  [Property object-position value 'right 20% bottom 10%']
+    expected: FAIL
+
+  [Property object-position value '10% center']
+    expected: FAIL
+
+  [Property object-position value 'center']
+    expected: FAIL
+
+  [Property object-position value 'center bottom']
+    expected: FAIL
+
+  [Property object-position value 'center top']
+    expected: FAIL
+
+  [Property object-position value 'center center']
+    expected: FAIL
+
+  [Property object-position value 'left center']
+    expected: FAIL
+
+  [Property object-position value 'right bottom']
+    expected: FAIL
+