build: Use home directory for Circle-CI test run

.circleci/config.yml

@@ -5,13 +5,12 @@ jobs:
       - image: circleci/golang:1.12
         environment:
           GO111MODULE: "on"
-    working_directory: /hcl
     steps:
       - checkout
       - run:
           name: "Prepare Artifact Store"
           command: |
-            mkdir -p /artifacts
+            mkdir -p /tmp/artifacts
       - restore_cache:
           keys:
             - v1-mod-cache

.circleci/test.sh

@@ -4,9 +4,9 @@ set -e
 echo "" > coverage.txt
 
 for d in $(go list ./... | grep -v vendor); do
-    go test -coverprofile=/artifacts/profile.out -covermode=atomic $d
-    if [ -f /artifacts/profile.out ]; then
-        cat /artifacts/profile.out >> /artifacts/coverage.txt
-        rm /artifacts/profile.out
+    go test -coverprofile=/tmp/artifacts/profile.out -covermode=atomic $d
+    if [ -f /tmp/artifacts/profile.out ]; then
+        cat /tmp/artifacts/profile.out >> /tmp/artifacts/coverage.txt
+        rm /tmp/artifacts/profile.out
     fi
 done