[recipes] add .gitattributes for proper recipe bundling

R=dnj@chromium.org

Bug: 662654
Change-Id: Ic5a59eeb67c435d54878ef5f060399f6b2963cd4
Reviewed-on: https://chromium-review.googlesource.com/523015
Commit-Queue: Robbie Iannucci <iannucci@chromium.org>
Reviewed-by: Nodir Turakulov <nodir@chromium.org>

.gitattributes

+# The `recipes` attribute controls which additional files are included in the
+# recipes bundle when running the `//recipes/recipes.py bundle` command. These
+# files will also be available to other repos' recipes when they pull in
+# depot_tools as a recipe dependency.
+
+# Tools
+/*.bat recipes
+/*.exe recipes
+/*.py  recipes
+/*.sh  recipes
+
+# Extensionless tools we want
+/apply_issue                  recipes
+/clang*                       recipes
+/depot-tools-auth             recipes
+/download_from_google_storage recipes
+/fetch                        recipes
+/gclient                      recipes
+/git*                         recipes
+/gn                           recipes
+/ninja*                       recipes
+/pylint*                      recipes
+/repo                         recipes
+/roll-dep*                    recipes
+
+# Symlinks
+/cbuildbot      recipes
+/chrome_set_ver recipes
+/cros*          recipes
+
+/support/* recipes
+
+# TODO: There are some really junky dependencies in here that we should probably
+# move to vpython/cipd.
+/third_party/**                     recipes
+/third_party/pymox/**              -recipes
+/third_party/cq_client/testdata/** -recipes
+
+/win_toolchain/** recipes
+
+/fetch_configs/*.py recipes
+
+# Some things we never need to include in the bundle
+*.diff         -recipes
+*LICENSE*      -recipes
+*README*       -recipes
+.gitattributes -recipes
+.gitignore     -recipes
+COPYING        -recipes
+MANIFEST.in    -recipes
+OWNERS         -recipes
+PKG-INFO       -recipes

recipes/recipe_modules/gclient/bundle_extra_paths.txt

-//gclient*
-//subprocess2.py
-//third_party/__init__.py
-//third_party/repo/

recipes/recipe_modules/git/bundle_extra_paths.txt

-//appengine_mapper.py
-//auth.py
-//checkout.py
-//clang_format.py
-//cpplint.py
-//dart_format.py
-//fix_encoding.py
-//gclient_utils.py
-//gerrit_util.py
-//git*
-//git_cache.py
-//git_common.py
-//git_footers.py
-//owners.py
-//owners_finder.py
-//presubmit_support.py
-//python_runner.sh
-//rietveld.py
-//scm.py
-//setup_color.py
-//subcommand.py
-//subprocess2.py
-//subprocess2.py
-//third_party/__init__.py
-//third_party/colorama/
-//third_party/httplib2/
-//third_party/upload/
-//watchlists.py

recipes/recipe_modules/presubmit/bundle_extra_paths.txt

-//auth.py
-//checkout.py
-//clang_format.py
-//dart_format.py
-//download_from_google_storage.py
-//fix_encoding.py
-//gclient_utils.py
-//gerrit_util.py
-//git_cache.py
-//git_cl.py
-//git_common.py
-//gn.py
-//gsutil.py
-//owners.py
-//owners_finder.py
-//patch.py
-//presubmit_canned_checks.py
-//presubmit_canned_checks.py
-//presubmit_support.py
-//rietveld.py
-//scm.py
-//setup_color.py
-//subcommand.py
-//subprocess2.py
-//third_party/__init__.py
-//third_party/colorama/
-//third_party/httplib2/
-//third_party/oauth2client/
-//third_party/upload.py
-//watchlists.py