[wf] max-paralell statement in all workflows #1552

Job	Run time
rpm_ipv6 (8, rpm_tester.sh)	1m 48s
rpm_ipv6 (8, rpm_tester.sh)	1m 48s
ipv6_apache2_wsgi (apache2, wsgi)	1m 28s
ipv6_apache2_wsgi (apache2, wsgi)	1m 28s
rpm_ipv6 (8, django_tester.sh)	5h 2m 6s
rpm_ipv6 (8, django_tester.sh)	5h 1m 47s
ipv6_apache2_wsgi (apache2, django)	1m 35s
ipv6_apache2_wsgi (apache2, django)	1m 35s
rpm_ipv6 (9, rpm_tester.sh)	1m 42s
rpm_ipv6 (9, rpm_tester.sh)	1m 42s
ipv6_apache2_wsgi (nginx, wsgi)	1m 21s
ipv6_apache2_wsgi (nginx, wsgi)	1m 21s
rpm_ipv6 (9, django_tester.sh)	5h 1m 45s
rpm_ipv6 (9, django_tester.sh)	5h 1m 40s
ipv6_apache2_wsgi (nginx, django)	1m 28s
ipv6_apache2_wsgi (nginx, django)	1m 28s
	20h 26m 2s

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