Adds ability to filter the set of tests that are run by a bot

scripts/slave/recipes/chromium_trybot.expected/no_compile_because_of_analyze.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "[BUILD]/scripts/slave/bot_update.py",
       "--master",
       "tryserver.chromium.linux",
       "--builder",
       "linux_chromium_rel",
@@ skipping 78 matching lines @@
     ],
     "cwd": "[SLAVE_BUILD]/src",
     "name": "git diff to analyze patch",
     "stdout": "/path/to/tmp/"
   },
   {
     "cmd": [
       "python",
       "-u",
       "[SLAVE_BUILD]/src/build/gyp_chromium",
-      "--analyzer",
-      "foo.cc"
+      "--analyzer2",
+      "{\"files\": [\"foo.cc\"], \"targets\": []}",
+      "/path/to/tmp/json"
     ],
     "env": {
       "GYP_DEFINES": "component=static_library dcheck_always_on=1 fastbuild=1 gomadir='[BUILD]/goma' target_arch=x64 use_goma=1"
     },
     "name": "analyze",
-    "stdout": "/path/to/tmp/",
     "~followup_annotations": [
-      "@@@STEP_TEXT@No compile necessary@@@"
+      "@@@STEP_TEXT@No compile necessary@@@",
+      "@@@STEP_LOG_LINE@json.output@{@@@",
+      "@@@STEP_LOG_LINE@json.output@  \"status\": \"No dependency\", @@@",
+      "@@@STEP_LOG_LINE@json.output@  \"targets\": []@@@",
+      "@@@STEP_LOG_LINE@json.output@}@@@",
+      "@@@STEP_LOG_END@json.output@@@"
     ]
   }
 ]