[autotest] Continuing refactor of dynamic_suite code; splitting monster files!

Split the biiiiig dynamic_suite.py and dynamic_suite_unittest.py into separate
files for Reimager and Suite.  Adjust imports to compensate.

BUG=chromium-os:30266
TEST=unit
TEST=successful run_suite.py run
TEST=suite_enumerator.py, suite_preprocessor.py,

Change-Id: I0457053a7ae1422970138619a64edbcfbbc338bc
Reviewed-on: https://gerrit.chromium.org/gerrit/30457
Tested-by: Chris Masone <cmasone@chromium.org>
Reviewed-by: Scott Zawalski <scottz@chromium.org>
Commit-Ready: Chris Masone <cmasone@chromium.org>
diff --git a/server/cros/dynamic_suite/constants.py b/server/cros/dynamic_suite/constants.py
new file mode 100644
index 0000000..28390d6
--- /dev/null
+++ b/server/cros/dynamic_suite/constants.py
@@ -0,0 +1,18 @@
+# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+
+# Job keyvals for finding debug symbols when processing crash dumps.
+JOB_BUILD_KEY = 'build'
+JOB_SUITE_KEY = 'suite'
+
+# Job attribute and label names
+JOB_REPO_URL = 'job_repo_url'
+VERSION_PREFIX = 'cros-version:'
+EXPERIMENTAL_PREFIX = 'experimental_'
+
+# Timings
+ARTIFACT_FINISHED_TIME = 'artifact_finished_time'
+DOWNLOAD_STARTED_TIME = 'download_started_time'
+PAYLOAD_FINISHED_TIME = 'payload_finished_time'