Refactor sessions to use socket pool #1300

	#
	# Copyright 2021 Google LLC
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.
	#

	name: labeler
	on:
	- pull_request_target
	jobs:
	labeler:
	runs-on: ubuntu-latest
	name: Label the PR size
	steps:
	- uses: codelytv/pr-size-labeler@v1
	with:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	xs_max_size: '10'
	s_max_size: '100'
	m_max_size: '500'
	l_max_size: '1000'
	fail_if_xl: 'false'
	message_if_xl: >
	'This PR exceeds the recommended size of 1000 lines.
	Please make sure you are NOT addressing multiple issues with one PR.
	Note this PR might be rejected due to its size.’

Provide feedback