docker: fix urllib2 import error for python3 full scan script
docker: fix urllib2 import error for python3 full scan script

already provided by the zap_common import

zaproxy/zaproxy,Ali-Razmjoo/zaproxy,psiinon/zaproxy,zapbot/zaproxy,Ali-Razmjoo/zaproxy,kingthorin/zaproxy,zaproxy/zaproxy,zapbot/zaproxy,zaproxy/zaproxy,Ali-Razmjoo/zaproxy,zaproxy/zaproxy,zapbot/zaproxy,meitar/zaproxy,meitar/zaproxy,zaproxy/zaproxy,kingthorin/zaproxy,Ali-Razmjoo/zaproxy,gmaran23/zaproxy,gmaran23/zaproxy,psiinon/zaproxy,thc202/zaproxy,thc202/zaproxy,Ali-Razmjoo/zaproxy,meitar/zaproxy,kingthorin/zaproxy,kingthorin/zaproxy,zaproxy/zaproxy,psiinon/zaproxy,psiinon/zaproxy,zapbot/zaproxy,Ali-Razmjoo/zaproxy,psiinon/zaproxy,zaproxy/zaproxy,zapbot/zaproxy,meitar/zaproxy,meitar/zaproxy,gmaran23/zaproxy,gmaran23/zaproxy,thc202/zaproxy,thc202/zaproxy,kingthorin/zaproxy,kingthorin/zaproxy,gmaran23/zaproxy,psiinon/zaproxy,zapbot/zaproxy,meitar/zaproxy,thc202/zaproxy,meitar/zaproxy,gmaran23/zaproxy,Ali-Razmjoo/zaproxy,meitar/zaproxy,zapbot/zaproxy,kingthorin/zaproxy,thc202/zaproxy,thc202/zaproxy,psiinon/zaproxy,gmaran23/zaproxy