Match the device config of iOS Debug and Release bots

iPhone 7 device pool is unhealthy

Bug: None
Change-Id: I375375a152622d542eabc90baa26842731fe6d1a
Reviewed-on: https://webrtc-review.googlesource.com/63900
Reviewed-by: Patrik Höglund <phoglund@webrtc.org>
Commit-Queue: Oleh Prypin <oprypin@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22552}
diff --git a/tools_webrtc/ios/internal.client.webrtc/iOS64_Release.json b/tools_webrtc/ios/internal.client.webrtc/iOS64_Release.json
index 89e60ea..8212480 100644
--- a/tools_webrtc/ios/internal.client.webrtc/iOS64_Release.json
+++ b/tools_webrtc/ios/internal.client.webrtc/iOS64_Release.json
@@ -22,8 +22,8 @@
   "tests": [
     {
       "include": "real_device_tests.json",
-      "device type": "iPhone 7",
-      "os": "11.2.1"
+      "device type": "iPhone 6s",
+      "os": "10.3.3"
     }
   ],
   "expiration_time": 3600
diff --git a/tools_webrtc/ios/internal.tryserver.webrtc/ios_arm64_rel.json b/tools_webrtc/ios/internal.tryserver.webrtc/ios_arm64_rel.json
index 89e60ea..8212480 100644
--- a/tools_webrtc/ios/internal.tryserver.webrtc/ios_arm64_rel.json
+++ b/tools_webrtc/ios/internal.tryserver.webrtc/ios_arm64_rel.json
@@ -22,8 +22,8 @@
   "tests": [
     {
       "include": "real_device_tests.json",
-      "device type": "iPhone 7",
-      "os": "11.2.1"
+      "device type": "iPhone 6s",
+      "os": "10.3.3"
     }
   ],
   "expiration_time": 3600