pylint: make pylint-quotes available

We load it, but disable all the warnings by default.  People can
re-enable the warnings for their modules if they want, but there
is way too much broken code in the tree currently.

Bug: 738534
Test: ran each pylint version by hand on some bad code
Change-Id: Ia5b24093f18febd452f4c1eed6e82044544161bc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1958849Reviewed-by: Robbie Iannucci <iannucci@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>

pylint-1.5

@@ -51,6 +51,13 @@
 #   version: "version:1.10.0"
 # >
 #
+# # Pylint extensions.
+#
+# wheel: <
+#   name: "infra/python/wheels/pylint-quotes-py2_py3"
+#   version: "version:0.1.8"
+# >
+#
 # # Pylint dependencies.
 #
 # wheel: <

pylint-1.6

@@ -51,6 +51,13 @@
 #   version: "version:1.10.0"
 # >
 #
+# # Pylint extensions.
+#
+# wheel: <
+#   name: "infra/python/wheels/pylint-quotes-py2_py3"
+#   version: "version:0.1.8"
+# >
+#
 # # Pylint dependencies.
 #
 # wheel: <

pylint-1.7

@@ -51,6 +51,13 @@
 #   version: "version:1.10.0"
 # >
 #
+# # Pylint extensions.
+#
+# wheel: <
+#   name: "infra/python/wheels/pylint-quotes-py2_py3"
+#   version: "version:0.1.8"
+# >
+#
 # # Pylint dependencies.
 #
 # wheel: <

pylint-1.8

@@ -51,6 +51,13 @@
 #   version: "version:1.10.0"
 # >
 #
+# # Pylint extensions.
+#
+# wheel: <
+#   name: "infra/python/wheels/pylint-quotes-py2_py3"
+#   version: "version:0.1.8"
+# >
+#
 # # Pylint dependencies.
 #
 # wheel: <

pylint-1.9

@@ -51,6 +51,13 @@
 #   version: "version:1.10.0"
 # >
 #
+# # Pylint extensions.
+#
+# wheel: <
+#   name: "infra/python/wheels/pylint-quotes-py2_py3"
+#   version: "version:0.1.8"
+# >
+#
 # # Pylint dependencies.
 #
 # wheel: <

pylintrc

@@ -17,6 +17,13 @@ persistent=yes
 # List of plugins (as comma separated values of python modules names) to load,
 # usually to register additional checkers.
 load-plugins=
+    pylint_quotes
+
+
+# Configure quote preferences.
+string-quote = single-avoid-escape
+triple-quote = double
+docstring-quote = double
 
 
 [MESSAGES CONTROL]
@@ -103,6 +110,9 @@ disable=
     eval-used,
     function-redefined,
     import-error,
+    invalid-docstring-quote,
+    invalid-string-quote,
+    invalid-triple-quote,
     locally-enabled,
     misplaced-comparison-constant,
     misplaced-bare-raise,