Tests/Minikube - Fix Google credentials (#194)

* Tests/Minikube - Downgraded Docker to 18.06.1

* Passing the GOOGLE_APPLICATION_CREDENTIALS env variable

* Copying the credentials file

* Using the home directory for the credentials file.

test/minikube/install_docker.sh

@@ -14,6 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+DOCKER_VERSION=18.06.1~ce~3-0~$(. /etc/os-release; echo "$ID")
+
 sudo apt-get update -y
 sudo apt-get install -y \
     apt-transport-https \
@@ -29,4 +31,4 @@ sudo add-apt-repository \
    stable"
 
 sudo apt-get update -y   
-sudo apt-get install docker-ce -y
+sudo apt-get install docker-ce="${DOCKER_VERSION}" -y

test/minikube/install_docker_minikube_argo.sh

@@ -16,7 +16,7 @@
 
 repo_test_dir=$(dirname $0)
 
-"${repo_test_dir}/install_docker.sh"
+DOCKER_VERSION=18.06.1~ce~3-0~$(. /etc/os-release; echo "$ID") "${repo_test_dir}/install_docker.sh"
 MINIKUBE_VERSION=v0.30.0 KUBECTL_VERSION=v1.12.2 KUBERNETES_VERSION=v1.12.2 "${repo_test_dir}/install_and_start_minikube_without_vm.sh"
 ARGO_VERSION=v2.2.0 "${repo_test_dir}/install_argo_client.sh"
 sudo apt-get install socat #needed for port forwarding

test/presubmit-tests-gce-minikube.sh

@@ -70,6 +70,9 @@ if [ "$(whoami)" == root ]; then
   export USER=not-root
 fi
 
+#Copy service account keys
+gcloud compute scp --zone=$ZONE --verbosity=error "$GOOGLE_APPLICATION_CREDENTIALS" $instance_name:"~/service-account.json"
+
 #Copy repo
 git_root=$(git rev-parse --show-toplevel)
 git_root_parent=$(dirname "$git_root")
@@ -79,7 +82,7 @@ gcloud compute scp --zone=$ZONE --verbosity=error --recurse "$git_root" $instanc
 gcloud compute ssh --zone=$ZONE $instance_name -- "~/pipelines/test/minikube/install_docker_minikube_argo.sh"
 
 #Running the presubmit tests
-gcloud compute ssh --zone=$ZONE $instance_name -- PULL_PULL_SHA="$PULL_PULL_SHA" WORKSPACE="~/${WORKSPACE}" "~/pipelines/test/presubmit-tests.sh" --cluster-type none "$@"
+gcloud compute ssh --zone=$ZONE $instance_name -- PULL_PULL_SHA="$PULL_PULL_SHA" WORKSPACE="~/${WORKSPACE}" GOOGLE_APPLICATION_CREDENTIALS="~/service-account.json" "~/pipelines/test/presubmit-tests.sh" --cluster-type none "$@"
 
 #Copy back the artifacts
 mkdir -p "${ARTIFACT_DIR}"