(#104) add asan to CI, fix a memory leak in unit test #1

	name: Unit Tests (ASan)

	# For more info and troubleshooting help for this workflow, see the Continuous Integration
	# page in the GUNNS Wiki.

	on:
	push:
	paths-ignore:
	- 'README.md'
	- 'draw/**'
	- 'bin/utils/simbus_icd_input_gen/**'
	- '.github/workflows/**'
	- '!.github/workflows/unit_test_asan.yml'

	jobs:
	all_unit_tests:
	runs-on: ubuntu-latest
	container: docker://oraclelinux:8

	steps:
	- name: Update package manager
	run: \|
	yum install -y yum-utils
	dnf config-manager --set-enabled ol8_codeready_builder
	yum repolist
	yum install -y epel-release && yum update -y

	- name: Install dependencies
	run: yum install -y tcsh make gcc gcc-c++ cppunit cppunit-devel lcov valgrind python3

	- name: Checkout repository
	uses: actions/checkout@master

	- name: Run tests
	run: \|
	# Set environment variables
	export GUNNS_HOME=`pwd`
	export MS_UTILS_HOME="${GUNNS_HOME}/ms-utils"
	export TS_MODELS_HOME="${GUNNS_HOME}/gunns-ts-models"
	# Some unit tests can fail unless parallel make, probably a missing dependency
	# in the UT makefiles...
	export MAKEFLAGS="-j4"
	# Set file permissions needed by the parsing test
	chmod a-r ms-utils/parsing/test/file_no_permission.txt
	chmod a-r ms-utils/parsing/test/nopermission
	# Make & run unit tests
	cd test
	./make_all_ut_asan.sh
	# Scan results for pass/fail
	chmod +x scan_all_ut_asan.py
	python3 ./scan_all_ut_asan.py

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