add recipe continuous builders for each repo with recipes

scripts/slave/recipes/infra/recipe_simulation.expected/normal.json

 [
   {
     "cmd": [
       "python",
       "-u",
+      "RECIPE_PACKAGE_REPO[build]/scripts/tools/pycurl.py",
+      "https://luci-config.appspot.com/_ah/api/config/v1/projects",
+      "--outfile",
+      "/path/to/tmp/",
+      "--attempts",
+      "3"
+    ],
+    "name": "Get luci-config projects"
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
       "RECIPE_MODULE[depot_tools::bot_update]/resources/bot_update.py",
       "--master",
       "chromium.tools.build",
       "--builder",
       "recipe simulation tester",
       "--slave",
       "TestSlavename",
       "--spec",
-      "cache_dir = '[GIT_CACHE]'\nsolutions = [{'deps_file': '.DEPS.git', 'managed': True, 'name': 'build', 'url': 'https://chromium.googlesource.com/chromium/tools/build.git'}]",
+      "cache_dir = '[SLAVE_BUILD]/_cache_dir'\nsolutions = [{'deps_file': 'DEPS', 'managed': True, 'name': 'build', 'url': 'https://repo.repo/build'}]",
       "--root",
       "build",
       "--revision_mapping_file",
-      "{\"build\": \"got_revision\"}",
+      "{}",
       "--git-cache-dir",
-      "[GIT_CACHE]",
+      "[SLAVE_BUILD]/_cache_dir",
       "--output_json",
       "/path/to/tmp/json",
       "--revision",
       "build@deadbeaf",
       "--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@    \"build\": \"deadbeaf\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
-      "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"build\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/build.git\", @@@",
-      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"80754af91bfb6d1073585b046fe0a474ce868509\"@@@",
-      "@@@STEP_LOG_LINE@json.output@    }@@@",
-      "@@@STEP_LOG_LINE@json.output@  }, @@@",
+      "@@@STEP_LOG_LINE@json.output@  \"manifest\": {}, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_failure\": false, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"build\", @@@",
-      "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"got_revision\": \"80754af91bfb6d1073585b046fe0a474ce868509\", @@@",
-      "@@@STEP_LOG_LINE@json.output@    \"got_revision_cp\": \"refs/heads/master@{#270553}\"@@@",
-      "@@@STEP_LOG_LINE@json.output@  }, @@@",
+      "@@@STEP_LOG_LINE@json.output@  \"properties\": {}, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"root\": \"build\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
-      "@@@STEP_LOG_END@json.output@@@",
-      "@@@SET_BUILD_PROPERTY@got_revision@\"80754af91bfb6d1073585b046fe0a474ce868509\"@@@",
-      "@@@SET_BUILD_PROPERTY@got_revision_cp@\"refs/heads/master@{#270553}\"@@@"
+      "@@@STEP_LOG_END@json.output@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
-      "[SLAVE_BUILD]/build/scripts/slave/recipes.py",
-      "fetch"
+      "RECIPE_PACKAGE_REPO[build]/scripts/tools/pycurl.py",
+      "https://luci-config.appspot.com//_ah/api/config/v1/config_sets/projects%2Fbuild%2Frefs%2Fheads%2Fmaster/config/recipes.cfg",
+      "--outfile",
+      "/path/to/tmp/",
+      "--attempts",
+      "3"
     ],
-    "name": "recipe fetch deps"
+    "name": "Get project 'build' config 'recipes.cfg'"
   },
   {
     "cmd": [
-      "python",
-      "-u",
-      "[SLAVE_BUILD]/build/scripts/slave/unittests/recipe_simulation_test.py",
-      "test"
+      "[SLAVE_BUILD]/build/foobar/recipes.py",
+      "--use-bootstrap",
+      "simulation_test"
     ],
     "name": "recipe simulation test"
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]