Molecule tests for certificates role

Issue-ID: OOM-1762

Change-Id: Ic13d7ec775a52ad95fc0388e8b84ea8ab7367666
Signed-off-by: Samuli Silvius <s.silvius@partner.samsung.com>
diff --git a/ansible/roles/certificates/defaults/main.yml b/ansible/roles/certificates/defaults/main.yml
index 260ba96..ad3422c 100644
--- a/ansible/roles/certificates/defaults/main.yml
+++ b/ansible/roles/certificates/defaults/main.yml
@@ -1,4 +1,4 @@
 ---
 # Generate certs to local current dir where ansible in run (= playbook_dir)
 # After ansible run, dir can be deleted but idempotence is lost and certs are re-generated in next run
-certificates_local_dir: certs
+certificates_local_dir: "{{ playbook_dir }}/certs"