Added spotbug and checkstyle support, updated gradle and some jars to latest to reduce vulnerability issues #125

	#
	# Copyright (c) Dell Inc., or its subsidiaries. All Rights Reserved.
	#
	# 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
	#
	name: build

	on: [push, pull_request, workflow_dispatch]
	# workflow_dispatch should make manually triggered ci/cd possible
	# workflow file (like this) with `workflow_dispatch` after on should exist on the master or default branch,
	# or there will be no ui for a manual trigger. https://github.community/t/workflow-dispatch-event-not-working/128856/2

	jobs:
	build:
	name: Build
	runs-on: ubuntu-20.04
	steps:
	- name: Checkout
	uses: actions/checkout@v2

	- name: Set up JDK
	uses: actions/setup-java@v2
	with:
	distribution: 'zulu'
	java-version: '11' # major or semver Java version will be acceptable, see https://github.com/marketplace/actions/setup-java-jdk#basic

	- name: Build
	run: ./scripts/build-installer.sh

	- name: Set env
	if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
	run: echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV

	- name: Release
	if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
	uses: softprops/action-gh-release@v1
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	with:
	files: ./pravega-sensor-collector/build/distributions/pravega-sensor-collector-*.tgz
	draft: true
	name: pravega-sensor-collector ${{ env.RELEASE_VERSION }}

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