Make the recipe roller tryjob accept tryjobs.

scripts/slave/recipes/infra/recipe_roll_tryjob.expected/tryjob.json

 [
   {
     "cmd": [
       "authutil",
       "token"
     ],
     "cwd": "[SLAVE_BUILD]",
     "name": "Get auth token",
     "stdout": "/path/to/tmp/"
   },
@@ skipping 68 matching lines @@
       "-u",
       "RECIPE_MODULE[depot_tools::bot_update]/resources/bot_update.py",
       "--spec",
       "cache_dir = '[GIT_CACHE]'\nsolutions = [{'deps_file': '.DEPS.git', 'managed': True, 'name': 'recipe_engine', 'url': 'https://repo.repo/recipes-py'}]",
       "--root",
       "recipe_engine",
       "--revision_mapping_file",
       "{}",
       "--git-cache-dir",
       "[GIT_CACHE]",
+      "--issue",
+      "12345678",
+      "--patchset",
+      "1",
+      "--rietveld_server",
+      "https://fake.code.review",
       "--output_json",
       "/path/to/tmp/json",
       "--revision",
       "recipe_engine@HEAD",
       "--force",
       "--output_manifest"
     ],
     "cwd": "[SLAVE_BUILD]/recipe_engine",
     "env": {
       "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]"
@@ skipping 46 matching lines @@
       "RECIPE_MODULE[depot_tools::bot_update]/resources/bot_update.py",
       "--spec",
       "cache_dir = '[GIT_CACHE]'\nsolutions = [{'deps_file': '.DEPS.git', 'managed': True, 'name': 'build', 'url': 'https://repo.repo/chromium/build'}]",
       "--root",
       "build",
       "--revision_mapping_file",
       "{}",
       "--git-cache-dir",
       "[GIT_CACHE]",
       "--issue",
-      "123456",
+      "12345678",
       "--patchset",
       "1",
       "--rietveld_server",
       "https://fake.code.review",
       "--output_json",
       "/path/to/tmp/json",
       "--revision",
       "build@HEAD",
       "--force",
       "--output_manifest"
@@ skipping 30 matching lines @@
       "simulation_test"
     ],
     "cwd": "[SLAVE_BUILD]",
     "name": "recipe_engine tests"
   },
   {
     "cmd": [
       "python",
       "-u",
       "[SLAVE_BUILD]/build/build/recipes.py",
+      "-O",
+      "recipe_engine=[SLAVE_BUILD]/recipe_engine/recipe_engine",
       "--package",
       "[SLAVE_BUILD]/build/build/infra/config/recipes.cfg",
       "simulation_test"
     ],
     "cwd": "[SLAVE_BUILD]",
     "name": "build tests"
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]