Recipes: make cwd default to slave_build

scripts/slave/recipes/v8.expected/full_client_v8_V8_Mips___builder.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "[BUILD]/scripts/slave/bot_update.py",
       "--master",
       "client.v8",
       "--builder",
       "V8 Mips - builder",
       "--slave",
       "TestSlavename",
       "--spec",
       "cache_dir = None\nsolutions = [{'custom_vars': {'chromium_trunk': 'svn://svn-mirror.golo.chromium.org/chrome/trunk'}, 'deps_file': 'DEPS', 'managed': True, 'name': 'v8', 'url': 'https://chromium.googlesource.com/v8/v8'}]",
       "--root",
       "v8",
       "--revision_mapping_file",
       "{\"v8\": \"got_revision\"}",
       "--output_json",
       "/path/to/tmp/json",
       "--revision",
       "v8@20123",
       "--no_shallow",
       "--output_manifest"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "bot_update",
     "~followup_annotations": [
       "@@@STEP_TEXT@Some step text@@@",
       "@@@STEP_LOG_LINE@json.output@{@@@",
       "@@@STEP_LOG_LINE@json.output@  \"did_run\": true, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"v8\": {@@@",
       "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/v8.git\", @@@",
       "@@@STEP_LOG_LINE@json.output@      \"revision\": \"f2cbea7e89a45f46819777bb78a1f5bd0241f64c\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }@@@",
@@ skipping 19 matching lines @@
       "RECIPE_MODULE[gsutil]/resources/gsutil_wrapper.py",
       "--",
       "[DEPOT_TOOLS]/gsutil.py",
       "--force-version",
       "3.25",
       "--",
       "cp",
       "gs://chromium-v8/mips-2013.11-36-mips-linux-gnu-i686-pc-linux-gnu.tar.bz2",
       "[SLAVE_BUILD]"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "gsutil bootstrapping mips toolchain"
   },
   {
     "cmd": [
       "tar",
       "xf",
       "mips-2013.11-36-mips-linux-gnu-i686-pc-linux-gnu.tar.bz2"
     ],
     "cwd": "[SLAVE_BUILD]",
     "name": "unzipping"
   },
   {
     "cmd": [
       "python",
       "-u",
       "[DEPOT_TOOLS]/gclient.py",
       "runhooks"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "env": {
       "AR": "[SLAVE_BUILD]/mips-2013.11/bin/mips-linux-gnu-ar",
       "CC": "[SLAVE_BUILD]/mips-2013.11/bin/mips-linux-gnu-gcc",
       "CXX": "[SLAVE_BUILD]/mips-2013.11/bin/mips-linux-gnu-g++",
       "GYP_CROSSCOMPILE": "1",
       "GYP_DEFINES": "target_arch=mips v8_enable_i18n_support=0 v8_target_arch=mips v8_use_snapshot=false",
       "LINK": "[SLAVE_BUILD]/mips-2013.11/bin/mips-linux-gnu-g++",
       "RANLIB": "[SLAVE_BUILD]/mips-2013.11/bin/mips-linux-gnu-ranlib"
     },
     "name": "gclient runhooks"
   },
   {
     "cmd": [
       "python",
       "-u",
       "[BUILD]/scripts/slave/cleanup_temp.py"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "cleanup_temp"
   },
   {
     "cmd": [
       "python",
       "-u",
       "[BUILD]/scripts/slave/compile.py",
       "--target",
       "Release",
       "--src-dir",
       "[SLAVE_BUILD]/v8",
       "--build-tool",
       "make",
       "--"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "compile"
   },
   {
     "allow_subannotations": true,
     "cmd": [
       "python",
       "-u",
       "[BUILD]/scripts/slave/zip_build.py",
       "--target",
       "Release",
       "--build-url",
       "gs://chromium-v8/v8-mips-rel",
       "--src-dir",
       "v8",
       "--factory-properties",
       "{\"blamelist\": [\"cool_dev1337@chromium.org\", \"hax@chromium.org\"], \"branch\": \"master\", \"buildername\": \"V8 Mips - builder\", \"buildnumber\": 571, \"mastername\": \"client.v8\", \"parent_buildername\": null, \"recipe\": \"v8\", \"revision\": \"20123\", \"slavename\": \"TestSlavename\", \"workdir\": \"/path/to/workdir/TestSlavename\"}",
       "--build-properties",
       "{\"blamelist\": [\"cool_dev1337@chromium.org\", \"hax@chromium.org\"], \"branch\": \"master\", \"buildername\": \"V8 Mips - 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"
   },
   {
     "cmd": [],
+    "cwd": "[SLAVE_BUILD]",
     "name": "trigger",
     "trigger_specs": [
       {
         "builder_name": "V8 Mips - big endian - nosnap - 1",
         "properties": {
           "parent_got_revision": "f2cbea7e89a45f46819777bb78a1f5bd0241f64c",
           "parent_got_revision_cp": "refs/heads/master@{#50110}",
           "revision": "f2cbea7e89a45f46819777bb78a1f5bd0241f64c"
         }
       },
       {
         "builder_name": "V8 Mips - big endian - nosnap - 2",
         "properties": {
           "parent_got_revision": "f2cbea7e89a45f46819777bb78a1f5bd0241f64c",
           "parent_got_revision_cp": "refs/heads/master@{#50110}",
           "revision": "f2cbea7e89a45f46819777bb78a1f5bd0241f64c"
         }
       }
     ],
     "~followup_annotations": [
       "@@@STEP_TEXT@V8 Mips - big endian - nosnap - 1<br />V8 Mips - big endian - nosnap - 2@@@"
     ]
   }
 ]