Recipes: make cwd default to slave_build

scripts/slave/recipes/v8.expected/full_client_v8_V8_Android_Arm64___builder.json

Index: scripts/slave/recipes/v8.expected/full_client_v8_V8_Android_Arm64___builder.json
diff --git a/scripts/slave/recipes/v8.expected/full_client_v8_V8_Android_Arm64___builder.json b/scripts/slave/recipes/v8.expected/full_client_v8_V8_Android_Arm64___builder.json
index 55c2638b78e05b7820c1de4998870b64e1931170..2bcfdbfcf32362a254159cfa95ec444f92b1e739 100644
--- a/scripts/slave/recipes/v8.expected/full_client_v8_V8_Android_Arm64___builder.json
+++ b/scripts/slave/recipes/v8.expected/full_client_v8_V8_Android_Arm64___builder.json
@@ -23,6 +23,7 @@
       "--no_shallow",
       "--output_manifest"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "bot_update",
     "~followup_annotations": [
       "@@@STEP_TEXT@Some step text@@@",
@@ -55,6 +56,7 @@
       "[DEPOT_TOOLS]/gclient.py",
       "runhooks"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "env": {
       "GYP_CROSSCOMPILE": "1",
       "GYP_DEFINES": "target_arch=arm64 v8_target_arch=android_arm64"
@@ -67,6 +69,7 @@
       "-u",
       "[BUILD]/scripts/slave/cleanup_temp.py"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "cleanup_temp"
   },
   {
@@ -85,6 +88,7 @@
       "..",
       "android_arm64.release"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "env": {
       "ANDROID_NDK_ROOT": "[SLAVE_BUILD]/v8/third_party/android_tools/ndk"
     },
@@ -107,6 +111,7 @@
       "--build-properties",
       "{\"blamelist\": [\"cool_dev1337@chromium.org\", \"hax@chromium.org\"], \"branch\": \"master\", \"buildername\": \"V8 Android Arm64 - builder\", \"buildnumber\": 571, \"mastername\": \"client.v8\", \"parent_buildername\": null, \"recipe\": \"v8\", \"revision\": \"20123\", \"slavename\": \"TestSlavename\", \"workdir\": \"/path/to/workdir/TestSlavename\"}"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "package build"
   }
 ]