V8: Add s390 bots.

scripts/slave/recipes/v8.expected/full_client_v8_ports_V8_Linux___s390___sim.json

Index: scripts/slave/recipes/v8.expected/full_client_v8_ports_V8_Linux___s390___sim.json
diff --git a/scripts/slave/recipes/v8.expected/full_client_v8_V8_Linux___ppc64___sim.json b/scripts/slave/recipes/v8.expected/full_client_v8_ports_V8_Linux___s390___sim.json
similarity index 98%
copy from scripts/slave/recipes/v8.expected/full_client_v8_V8_Linux___ppc64___sim.json
copy to scripts/slave/recipes/v8.expected/full_client_v8_ports_V8_Linux___s390___sim.json
index b699ad65675a9a9e98d839418afac8eb5d9b06ef..d73a9d9de5ee09d09809e02570a07a222d08c95c 100644
--- a/scripts/slave/recipes/v8.expected/full_client_v8_V8_Linux___ppc64___sim.json
+++ b/scripts/slave/recipes/v8.expected/full_client_v8_ports_V8_Linux___s390___sim.json
@@ -5,9 +5,9 @@
       "-u",
       "RECIPE_MODULE[depot_tools::bot_update]/resources/bot_update.py",
       "--master",
-      "client.v8",
+      "client.v8.ports",
       "--builder",
-      "V8 Linux - ppc64 - sim",
+      "V8 Linux - s390 - sim",
       "--slave",
       "TestSlavename",
       "--spec",
@@ -66,7 +66,7 @@
     ],
     "cwd": "[SLAVE_BUILD]",
     "env": {
-      "GYP_DEFINES": "clang=1 gomadir='[BUILD]/goma' target_arch=x64 use_goma=1 v8_target_arch=ppc64",
+      "GYP_DEFINES": "clang=1 gomadir='[BUILD]/goma' target_arch=ia32 use_goma=1 v8_target_arch=s390",
       "GYP_GENERATORS": "ninja",
       "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]"
     },
@@ -146,7 +146,7 @@
       "--mode",
       "Release",
       "--arch",
-      "ppc64",
+      "s390",
       "--outdir",
       "out",
       "--buildbot",