run linux longhaul under valgrind memorychecks (#2266)

* change ctest to use memcheck

* enable tests to run under memcheck

* chmod run_tests_memcheck.sh

* add git update-index --chmod=+x

* git update-index --chmod=+x

build/longhaul.vsts-ci.yml

@@ -19,11 +19,10 @@ jobs:
       sudo cat /etc/os-release
       sudo apt show valgrind
       sudo chmod --recursive ugo+rw cmake
-      sudo chmod 755 jenkins/longhaul_c.sh
       sudo -E ./jenkins/longhaul_c.sh
     displayName: 'Build'
   - script: |
-      cd cmake && sudo -E ../build_all/linux/run_tests.sh
+      cd cmake && sudo -E ../build_all/linux/run_tests_memcheck.sh
     displayName: 'Run Tests'
     env:
       IOTHUB_CONNECTION_STRING: $(IOTHUB-CONNECTION-STRING)

build_all/linux/run_tests_memcheck.sh

@@ -0,0 +1,16 @@
+#! /bin/bash
+
+# Copyright (c) Microsoft. All rights reserved.
+# Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+set -o errexit # Exit if command failed.
+set -o pipefail # Exit if pipe failed.
+
+# Only for testing E2E behaviour !!! 
+TEST_CORES=16
+
+# Refresh dynamic libs to link to
+sudo ldconfig
+
+ctest -T MemCheck --no-compress-output -C "Debug" -V -j $TEST_CORES --schedule-random
+