WebRTC: Move iOS Simulator bots to client.webrtc + add trybots

scripts/slave/recipes/webrtc/standalone.expected/tryserver_webrtc_ios64_simulator.json

Index: scripts/slave/recipes/webrtc/standalone.expected/tryserver_webrtc_ios64_simulator.json
diff --git a/scripts/slave/recipes/webrtc/standalone.expected/tryserver_webrtc_ios_arm64_rel.json b/scripts/slave/recipes/webrtc/standalone.expected/tryserver_webrtc_ios64_simulator.json
similarity index 97%
copy from scripts/slave/recipes/webrtc/standalone.expected/tryserver_webrtc_ios_arm64_rel.json
copy to scripts/slave/recipes/webrtc/standalone.expected/tryserver_webrtc_ios64_simulator.json
index 50b4387373e89ccd24f78f3e1fd3e90b5d166ffb..e450a44aa83aa60ca067e55ccb16d19bdfc75ce4 100644
--- a/scripts/slave/recipes/webrtc/standalone.expected/tryserver_webrtc_ios_arm64_rel.json
+++ b/scripts/slave/recipes/webrtc/standalone.expected/tryserver_webrtc_ios64_simulator.json
@@ -7,7 +7,7 @@
       "--master",
       "tryserver.webrtc",
       "--builder",
-      "ios_arm64_rel",
+      "ios64_simulator",
       "--slave",
       "slavename",
       "--spec",
@@ -72,7 +72,7 @@
     ],
     "env": {
       "GYP_CROSSCOMPILE": "1",
-      "GYP_DEFINES": "OS=ios build_with_libjingle=1 chromium_ios_signing=0 clang=1 component=static_library dcheck_always_on=1 fastbuild=1 gomadir='[BUILD]/goma' key_id='' mac_sdk=10.9 target_arch=arm64 use_goma=1",
+      "GYP_DEFINES": "OS=ios build_with_libjingle=1 chromium_ios_signing=0 clang=1 component=static_library dcheck_always_on=1 fastbuild=1 gomadir='[BUILD]/goma' key_id='' mac_sdk=10.9 target_arch=x64 use_goma=1",
       "GYP_GENERATORS": "ninja"
     },
     "name": "gclient runhooks"
@@ -83,7 +83,7 @@
       "-u",
       "[BUILD]/scripts/slave/compile.py",
       "--target",
-      "Release-iphoneos",
+      "Debug-iphonesimulator",
       "--src-dir",
       "[SLAVE_BUILD]/src",
       "--build-tool",