Enable --git-cache-dir option in chromite/cbuildbot.

scripts/slave/recipes/cros/cbuildbot_tryjob.py

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import base64
 import json
 import zlib
 
 
 DEPS = [
@@ skipping 128 matching lines @@
           slavename='test',
           repository='https://chromium.googlesource.com/chromiumos/tryjobs.git',
           revision=api.gitiles.make_hash('test'),
           cbb_config='internal-paladin',
           cbb_extra_args='["--timeout", "14400", "--remote-trybot",'
                          '"--remote-version=4"]',
       )
       + api.chromite.seed_chromite_config(_CHROMITE_CONFIG)
   )
 
+  yield (
+      api.test('release')
+      + api.properties(
+          mastername='chromiumos.tryserver',
+          buildername='paladin',
+          slavename='test',
+          repository='https://chromium.googlesource.com/chromiumos/tryjobs.git',
+          revision=api.gitiles.make_hash('test'),
+          cbb_config='x86-generic-full',
+          cbb_branch='release-R55-9999.B',
+          cbb_extra_args='["--timeout", "14400", "--remote-trybot",'
+                         '"--remote-version=4"]',
+      )
+      + api.chromite.seed_chromite_config(_CHROMITE_CONFIG)
+  )
+
+  yield (
+      api.test('pre_git_cache_release')
+      + api.properties(
+          mastername='chromiumos.tryserver',
+          buildername='paladin',
+          slavename='test',
+          repository='https://chromium.googlesource.com/chromiumos/tryjobs.git',
+          revision=api.gitiles.make_hash('test'),
+          cbb_config='x86-generic-full',
+          cbb_branch='release-R54-8743.B',
+          cbb_extra_args='["--timeout", "14400", "--remote-trybot",'
+                         '"--remote-version=4"]',
+      )
+      + api.chromite.seed_chromite_config(_CHROMITE_CONFIG)
+  )
+
   # Test a CrOS tryjob with compressed "cbb_extra_args".
   yield (
       api.test('basic_compressed')
       + api.properties(
           mastername='chromiumos.tryserver',
           buildername='full',
           slavename='test',
           repository='https://chromium.googlesource.com/chromiumos/tryjobs.git',
           revision=api.gitiles.make_hash('test'),
           cbb_config='x86-generic-full',
@@ skipping 29 matching lines @@
           slavename='test',
           repository='https://chromium.googlesource.com/chromiumos/tryjobs.git',
           revision=api.gitiles.make_hash('test'),
           cbb_config='binhost-pre-cq',
           cbb_extra_args='["--timeout", "14400", "--remote-trybot",'
                          '"--remote-version=4"]',
           buildbucket=json.dumps({'build': {'id':'12345'}})
       )
       + api.chromite.seed_chromite_config(_CHROMITE_CONFIG)
   )