Revert "build: roll infra_paths changes"

scripts/slave/recipes/cros/cbuildbot.expected/chromiumos_paladin.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[depot_tools::bot_update]/resources/bot_update.py",
       "--master",
       "chromiumos",
       "--builder",
       "Test",
       "--slave",
       "test",
       "--spec",
-      "cache_dir = '[ROOT]/b/build/slave/cache_dir'\nsolutions = [{'deps_file': 'DEPS', 'managed': True, 'name': 'chromite', 'url': 'https://chromium.googlesource.com/chromiumos/chromite.git'}]",
+      "cache_dir = '[GIT_CACHE]'\nsolutions = [{'deps_file': 'DEPS', 'managed': True, 'name': 'chromite', 'url': 'https://chromium.googlesource.com/chromiumos/chromite.git'}]",
       "--root",
       "chromite",
       "--revision_mapping_file",
       "{}",
       "--git-cache-dir",
-      "[ROOT]/b/build/slave/cache_dir",
+      "[GIT_CACHE]",
       "--output_json",
       "/path/to/tmp/json",
       "--revision",
       "chromite@master:",
       "--force",
       "--output_manifest"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "env": {
       "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]"
     },
     "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@  \"fixed_revisions\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"chromite\": \"master:\"@@@",
@@ skipping 15 matching lines @@
       "RECIPE_MODULE[build::gitiles]/resources/gerrit_client.py",
       "--json-file",
       "/path/to/tmp/json",
       "--url",
       "https://chromium.googlesource.com/chromiumos/manifest-versions/+/a94a8fe5ccb19ba61c4c0873d391e987982fbbd3",
       "--format",
       "json",
       "--attempts",
       "10"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "Fetch manifest config",
     "~followup_annotations": [
       "@@@STEP_TEXT@<br/>Chromite branch: master@@@",
       "@@@STEP_LOG_LINE@json.output@{@@@",
       "@@@STEP_LOG_LINE@json.output@  \"author\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"email\": \"testauthor@fake.chromium.org\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"name\": \"Test Author\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"time\": \"Mon Jan 01 00:00:00 2015\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"commit\": \"a94a8fe5ccb19ba61c4c0873d391e987982fbbd3\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"committer\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"email\": \"testauthor@fake.chromium.org\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"name\": \"Test Author\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"time\": \"Mon Jan 01 00:00:00 2015\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"message\": \"Commit message!\\nAutomatic: Start master-paladin master 6952.0.0-rc4\\nCrOS-Build-Id: 1337\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"parents\": [@@@",
       "@@@STEP_LOG_LINE@json.output@    \"36786b4475350efa4e9e48de5ef516cc15e91a47\"@@@",
       "@@@STEP_LOG_LINE@json.output@  ], @@@",
       "@@@STEP_LOG_LINE@json.output@  \"tree\": \"d610084188c1248718d7541809f26d53384e9ade\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"tree_diff\": []@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@"
     ]
   },
   {
     "allow_subannotations": true,
     "cmd": [
-      "[CWD]/chromite/bin/cbuildbot",
+      "[SLAVE_BUILD]/chromite/bin/cbuildbot",
       "--buildroot",
       "[ROOT]/cbuild/external_master",
       "--buildbot",
       "--branch",
       "master",
       "--buildnumber",
       "12345",
       "--master-build-id",
       "1337",
       "x86-generic-paladin"
     ],
-    "cwd": "[CWD]",
+    "cwd": "[SLAVE_BUILD]",
     "name": "cbuildbot [x86-generic-paladin]"
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]