Skip various CSS animation tests directories

These are all going to be flaky until we get further along with the
transition and animation improvements. The flakiness is due to the fact
that it is more likely that these tests pass now.

tests/wpt/include.ini

@@ -19,20 +19,34 @@ skip: true
     skip: false
   [CSS2]
     skip: false
+    [linebox]
+      skip:false
+      [animations]
+        skip: true
   [css-align]
     skip: false
+    [animation]
+      skip: true
   [css-animations]
     skip: false
   [css-backgrounds]
     skip: false
+    [animations]
+      skip: true
   [css-color]
     skip: false
+    [animation]
+      skip: true
   [css-conditional]
     skip: false
   [css-flexbox]
     skip: false
+    [animation]
+      skip: true
   [css-fonts]
     skip: false
+    [animations]
+      skip: true
   [css-images]
     skip: false
   [css-paint-api]
@@ -41,18 +55,28 @@ skip: true
     skip: false
   [css-text]
     skip: false
+    [animations]
+      skip: true
     [i18n]
       skip: true
   [css-text-decor]
     skip: false
   [css-transforms]
     skip: false
+    [animation]
+      skip: true
   [css-transitions]
     skip: false
+    [animations]
+      skip: true
   [css-ui]
     skip: false
+    [animation]
+      skip: true
   [css-values]
     skip: false
+    [animations]
+      skip: true
   [css-variables]
     skip: false
   [cssom]
@@ -61,6 +85,8 @@ skip: true
     skip: false
   [filter-effects]
     skip: false
+    [animation]
+      skip: true
   [geometry]
     skip: false
   [mediaqueries]