Add PYTHON_VERSION_COMPATIBILITY to gerrit recipe module

Bug: 1227140
Change-Id: I3cea6609eb5bb6b7f392e1078eb023ca19c6fb3e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3123939
Reviewed-by: Anthony Polito <apolito@google.com>
Commit-Queue: Gavin Mak <gavinmak@google.com>

recipes/README.recipes.md

@@ -7,7 +7,7 @@
   * [cipd](#recipe_modules-cipd) — API for interacting with CIPD.
   * [depot_tools](#recipe_modules-depot_tools) — The `depot_tools` module provides safe functions to access paths within the depot_tools repo.
   * [gclient](#recipe_modules-gclient)
-  * [gerrit](#recipe_modules-gerrit)
+  * [gerrit](#recipe_modules-gerrit) (Python3 ✅)
   * [git](#recipe_modules-git)
   * [git_cl](#recipe_modules-git_cl) (Python3 ✅)
   * [gitiles](#recipe_modules-gitiles) (Python3 ✅)
@@ -29,7 +29,7 @@
   * [gclient:tests/diff_deps](#recipes-gclient_tests_diff_deps)
   * [gclient:tests/patch_project](#recipes-gclient_tests_patch_project)
   * [gclient:tests/sync_failure](#recipes-gclient_tests_sync_failure)
-  * [gerrit:examples/full](#recipes-gerrit_examples_full)
+  * [gerrit:examples/full](#recipes-gerrit_examples_full) (Python3 ✅)
   * [git:examples/full](#recipes-git_examples_full)
   * [git_cl:examples/full](#recipes-git_cl_examples_full) (Python3 ✅)
   * [gitiles:examples/full](#recipes-gitiles_examples_full) (Python3 ✅)
@@ -363,9 +363,9 @@ revision map. This doesn't overwrite the revision if it was already set.
 &emsp; **@use_mirror.setter**<br>&mdash; **def [use\_mirror](/recipes/recipe_modules/gclient/api.py#116)(self, val):**
 ### *recipe_modules* / [gerrit](/recipes/recipe_modules/gerrit)
 
-[DEPS](/recipes/recipe_modules/gerrit/__init__.py#1): [recipe\_engine/context][recipe_engine/recipe_modules/context], [recipe\_engine/file][recipe_engine/recipe_modules/file], [recipe\_engine/json][recipe_engine/recipe_modules/json], [recipe\_engine/path][recipe_engine/recipe_modules/path], [recipe\_engine/python][recipe_engine/recipe_modules/python], [recipe\_engine/raw\_io][recipe_engine/recipe_modules/raw_io], [recipe\_engine/step][recipe_engine/recipe_modules/step]
+[DEPS](/recipes/recipe_modules/gerrit/__init__.py#3): [recipe\_engine/context][recipe_engine/recipe_modules/context], [recipe\_engine/file][recipe_engine/recipe_modules/file], [recipe\_engine/json][recipe_engine/recipe_modules/json], [recipe\_engine/path][recipe_engine/recipe_modules/path], [recipe\_engine/python][recipe_engine/recipe_modules/python], [recipe\_engine/raw\_io][recipe_engine/recipe_modules/raw_io], [recipe\_engine/step][recipe_engine/recipe_modules/step]
 
-PYTHON_VERSION_COMPATIBILITY: PY2
+PYTHON_VERSION_COMPATIBILITY: PY2+3
 
 #### **class [GerritApi](/recipes/recipe_modules/gerrit/api.py#7)([RecipeApi][recipe_engine/wkt/RecipeApi]):**
 
@@ -1134,11 +1134,11 @@ PYTHON_VERSION_COMPATIBILITY: PY2
 &mdash; **def [RunSteps](/recipes/recipe_modules/gclient/tests/sync_failure.py#13)(api):**
 ### *recipes* / [gerrit:examples/full](/recipes/recipe_modules/gerrit/examples/full.py)
 
-[DEPS](/recipes/recipe_modules/gerrit/examples/full.py#5): [gerrit](#recipe_modules-gerrit), [recipe\_engine/step][recipe_engine/recipe_modules/step]
+[DEPS](/recipes/recipe_modules/gerrit/examples/full.py#7): [gerrit](#recipe_modules-gerrit), [recipe\_engine/step][recipe_engine/recipe_modules/step]
 
-PYTHON_VERSION_COMPATIBILITY: PY2
+PYTHON_VERSION_COMPATIBILITY: PY2+3
 
-&mdash; **def [RunSteps](/recipes/recipe_modules/gerrit/examples/full.py#11)(api):**
+&mdash; **def [RunSteps](/recipes/recipe_modules/gerrit/examples/full.py#13)(api):**
 ### *recipes* / [git:examples/full](/recipes/recipe_modules/git/examples/full.py)
 
 [DEPS](/recipes/recipe_modules/git/examples/full.py#5): [git](#recipe_modules-git), [recipe\_engine/buildbucket][recipe_engine/recipe_modules/buildbucket], [recipe\_engine/context][recipe_engine/recipe_modules/context], [recipe\_engine/path][recipe_engine/recipe_modules/path], [recipe\_engine/platform][recipe_engine/recipe_modules/platform], [recipe\_engine/properties][recipe_engine/recipe_modules/properties], [recipe\_engine/raw\_io][recipe_engine/recipe_modules/raw_io], [recipe\_engine/step][recipe_engine/recipe_modules/step]

recipes/recipe_modules/gerrit/__init__.py

@@ -1,3 +1,5 @@
+PYTHON_VERSION_COMPATIBILITY = 'PY2+3'
+
 DEPS = [
     'recipe_engine/context',
     'recipe_engine/file',

recipes/recipe_modules/gerrit/examples/full.py

@@ -2,6 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+PYTHON_VERSION_COMPATIBILITY = 'PY2+3'
+
 DEPS = [
     'gerrit',
     'recipe_engine/step',