fix vault password file handling

overlay/bin/molecule

@@ -23,6 +23,7 @@ if [ -n "${MOLECULE_CUSTOM_FILTERS_REPO}" ]; then
 fi
 
 if [ -n "${MOLECULE_ANSIBLE_VAULT_PASSWORD}" ]; then
+    printf "Write vault password file ...\n"
     MOLECULE_ANSIBLE_VAULT_PASSWORD_FILE=/root/.vaultpasswd
     echo "${MOLECULE_ANSIBLE_VAULT_PASSWORD}" > $MOLECULE_ANSIBLE_VAULT_PASSWORD_FILE
     exec env ANSIBLE_VAULT_PASSWORD_FILE=$MOLECULE_ANSIBLE_VAULT_PASSWORD_FILE /usr/local/bin/molecule "$@"