Add support for build_limited subprojects in presubmit builder

scripts/slave/recipes/run_presubmit.expected/build_limited_scripts_slave.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "[BUILD]/scripts/slave/bot_update.py",
       "--master",
       "tryserver.chromium.linux",
       "--builder",
-      "build_limited_presubmit",
+      "build-limited-scripts-slave-presubmit",
       "--slave",
       "TestSlavename",
       "--spec",
       "cache_dir = '[ROOT]/git_cache'\nsolutions = [{'deps_file': '.DEPS.git', 'managed': True, 'name': 'build_limited', 'url': 'https://chrome-internal.googlesource.com/chrome/tools/build_limited'}, {'deps_file': '.DEPS.git', 'managed': True, 'name': 'build', 'url': 'https://chromium.googlesource.com/chromium/tools/build.git'}]",
       "--root",
-      "build_limited",
+      "build_limited/scripts/slave",
       "--revision_mapping_file",
-      "{\"build\": \"got_build_revision\", \"build_limited\": \"got_revision\"}",
+      "{\"build\": \"got_build_revision\", \"build_limited\": \"got_revision\", \"build_limited/scripts/slave\": \"got_revision\"}",
       "--issue",
       "12853011",
       "--patchset",
       "1",
       "--rietveld_server",
       "https://codereview.chromium.org",
       "--output_json",
       "/path/to/tmp/json",
       "--revision",
       "build_limited@HEAD"
     ],
     "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@  \"patch_failure\": false, @@@",
-      "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"build_limited\", @@@",
+      "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"build_limited/scripts/slave\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_build_revision\": \"80754af91bfb6d1073585b046fe0a474ce868509\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_build_revision_cp\": \"refs/heads/master@{#270553}\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_revision\": \"514d546519f6086da595eb348ff3291098b9778a\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_revision_cp\": \"refs/heads/master@{#222373}\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"root\": \"build_limited\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@",
       "@@@SET_BUILD_PROPERTY@got_build_revision_cp@\"refs/heads/master@{#270553}\"@@@",
       "@@@SET_BUILD_PROPERTY@got_revision@\"514d546519f6086da595eb348ff3291098b9778a\"@@@",
       "@@@SET_BUILD_PROPERTY@got_revision_cp@\"refs/heads/master@{#222373}\"@@@",
       "@@@SET_BUILD_PROPERTY@got_build_revision@\"80754af91bfb6d1073585b046fe0a474ce868509\"@@@"
     ]
   },
   {
     "cmd": [
       "git",
       "-c",
       "user.email=commit-bot@chromium.org",
       "-c",
       "user.name=The Commit Bot",
       "commit",
       "-a",
       "-m",
       "Committed patch"
     ],
-    "cwd": "[SLAVE_BUILD]/build_limited",
+    "cwd": "[SLAVE_BUILD]/build_limited/scripts/slave",
     "name": "commit git patch"
   },
   {
     "cmd": [
       "python",
       "-u",
       "[DEPOT_TOOLS]/presubmit_support.py",
       "--root",
-      "[SLAVE_BUILD]/build_limited",
+      "[SLAVE_BUILD]/build_limited/scripts/slave",
       "--commit",
       "--verbose",
       "--verbose",
       "--issue",
       "12853011",
       "--patchset",
       "1",
       "--skip_canned",
       "CheckRietveldTryJobExecution",
       "--skip_canned",
       "CheckTreeIsOpen",
       "--skip_canned",
       "CheckBuildbotPendingBuilds",
       "--rietveld_url",
       "https://codereview.chromium.org",
       "--rietveld_fetch",
       "--upstream",
       "514d546519f6086da595eb348ff3291098b9778a",
       "--trybot-json",
       "/path/to/tmp/json",
       "--rietveld_email",
       ""
     ],
     "cwd": "[SLAVE_BUILD]",
     "name": "presubmit",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@[@@@",
       "@@@STEP_LOG_LINE@json.output@  [@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"build_limited_presubmit\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"build-limited-scripts-slave-presubmit\", @@@",
       "@@@STEP_LOG_LINE@json.output@    [@@@",
       "@@@STEP_LOG_LINE@json.output@      \"compile\"@@@",
       "@@@STEP_LOG_LINE@json.output@    ]@@@",
       "@@@STEP_LOG_LINE@json.output@  ]@@@",
       "@@@STEP_LOG_LINE@json.output@]@@@",
       "@@@STEP_LOG_END@json.output@@@"
     ]
   }
 ]