[python xDS protos] move to a shallower directory (#41261)

This will avoid exceeding the Windows 150-character path length limit when we upgrade the xDS protos.

Closes #41261

PiperOrigin-RevId: 847800132

.gitattributes

@@ -19,7 +19,7 @@ src/python/grpcio/grpc_core_dependencies.py linguist-generated=true
 src/ruby/ext/grpc/rb_grpc_imports.generated.h linguist-generated=true
 src/ruby/ext/grpc/rb_grpc_imports.generated.c linguist-generated=true
 include/grpc/module.modulemap linguist-generated=true
-tools/distrib/python/xds_protos/** linguist-generated=true
+py_xds_protos/** linguist-generated=true
 tools/doxygen/Doxyfile.c++ linguist-generated=true
 tools/doxygen/Doxyfile.c++.internal linguist-generated=true
 tools/doxygen/Doxyfile.core linguist-generated=true

grpc-style-config.toml

@@ -24,8 +24,8 @@ extend-exclude = '''
   | src/python/grpcio_observability/observability_lib_deps.py
   | .*_pb2.py  # autogenerated Protocol Buffer files
   | .*_pb2_grpc.py  # autogenerated Protocol Buffer gRPC files
-  # AUTO-GENERATED By tools/distrib/python/xds_protos/build_xds_protos.py
-  | tools/distrib/python/xds_protos/.*
+  # AUTO-GENERATED By py_xds_protos/build_xds_protos.py
+  | py_xds_protos/.*
 )
 '''
 
@@ -52,7 +52,7 @@ skip_glob = [
     "*pb2*.py",
     "*pb2*.pyi",
     "**/site-packages/**/*",
-    "tools/distrib/python/xds_protos/*",
+    "py_xds_protos/*",
     "**/.venv-*",
 ]
 single_line_exclusions = ["typing"]

py_xds_protos/BUILD.bazel

@@ -34,7 +34,7 @@ _XDS_PROTO_DIRECTORIES = [
 ]
 
 py_library(
-    name = "xds_protos",
+    name = "py_xds_protos",
     srcs = (["__init__.py"] +
             glob([d + "/**/*.py" for d in _XDS_PROTO_DIRECTORIES])),
     imports = ["."],