[ios] Add missing iPad tests to ios-simulator-full-configs.

Change-Id: I45d3004df0ff4881329edd8bfb2f72ac6d3aeb24
Reviewed-on: https://chromium-review.googlesource.com/c/1341209
Commit-Queue: Justin Cohen <justincohen@chromium.org>
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#609151}

ios/build/bots/chromium.mac/ios-simulator-full-configs.json

@@ -105,6 +105,28 @@
         { "os": "Mac-10.13.6", "pool": "Chrome" }
       ],
       "priority": 29
+    },
+    {
+      "include": "eg_cq_tests.json",
+      "device type": "iPad Air 2",
+      "os": "11.4",
+      "dimensions": [
+        { "os": "Mac-10.13.4", "pool": "Chrome" },
+        { "os": "Mac-10.13.5", "pool": "Chrome" },
+        { "os": "Mac-10.13.6", "pool": "Chrome" }
+      ],
+      "priority": 29
+    },
+    {
+      "include": "eg_cq_tests.json",
+      "device type": "iPad Air 2",
+      "os": "12.1",
+      "dimensions": [
+        { "os": "Mac-10.13.4", "pool": "Chrome" },
+        { "os": "Mac-10.13.5", "pool": "Chrome" },
+        { "os": "Mac-10.13.6", "pool": "Chrome" }
+      ],
+      "priority": 29
     }
   ]
 }