Moves analyze config into its own file

This way I don't have to duplicate it across bots. I'll remove from
the other files once the recipe side has been updated.

BUG=109173
TEST=none
R=thakis@chromium.org

Review URL: https://codereview.chromium.org/450403002

Cr-Commit-Position: refs/heads/master@{#288388}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@288388 0039d316-1c4b-4281-b951-d872f2087c98

testing/buildbot/trybot_analyze_config.json

+{
+  "exclusions": [
+    ".*gyp[i]?",
+    "build/android/pylib",
+    "build/compiler_version.py",
+    "build/get_landmines.py",
+    "build/gyp_chromium",
+    "build/linux/sysroot_ld_path.sh",
+    "chrome/test/data/.*",
+    "content/test/data/.*",
+    "DEPS",
+    "testing/buildbot/.*",
+    "tools/clang/scripts/plugin_flags.sh",
+    "tools/clang/scripts/update.py",
+    "tools/clang/scripts/update.sh",
+    "tools/perf/.*",
+    "tools/telemetry/.*",
+    "tools/whitespace.txt"
+  ]
+}