Cleanup docker container list

This cleans up the list of container which have be run for tests completely.

test/test.bats

@@ -26,13 +26,17 @@ load test_helper
   wait_process_by_cid $LDAP_CID slapd
   run docker exec $LDAP_CID ldapsearch -x -h ldap.example.org -b dc=example,dc=org -D "cn=admin,dc=example,dc=org" -w admin
   docker kill $LDAP_CID
+  clear_containers_by_cid $LDAP_CID
+
   [ "$status" -eq 0 ]
+
   LDAP_CID=$(docker run -h ldap.example.org -e LDAP_TLS=false --volume $PWD/VOLUMES/database:/var/lib/ldap --volume $PWD/VOLUMES/config:/etc/ldap/slapd.d -d $NAME:$VERSION)
   wait_process_by_cid $LDAP_CID slapd
   run docker exec $LDAP_CID ldapsearch -x -h ldap.example.org -b dc=example,dc=org -D "cn=admin,dc=example,dc=org" -w admin
   run docker exec $LDAP_CID chown -R $UID:$UID /var/lib/ldap /etc/ldap/slapd.d
   docker kill $LDAP_CID
   rm -rf VOLUMES
+  clear_containers_by_cid $LDAP_CID
 
   [ "$status" -eq 0 ]