tests

Switch 'osc.conf.config' from dict to Options class with type checking #246

Job	Run time
unit (registry.fedoraproject.org/fedora:36)	1m 15s
unit (registry.fedoraproject.org/fedora:rawhide)	1m 8s
unit (registry.opensuse.org/opensuse/leap:15.3)	1m 3s
unit (registry.opensuse.org/opensuse/leap:15.4)	1m 1s
unit (registry.opensuse.org/opensuse/leap:15.5)	1m 1s
unit (registry.opensuse.org/opensuse/tumbleweed)	58s
unit (quay.io/centos/centos:stream9)	37s
unit (docker.io/library/debian:stable)	44s
unit (docker.io/library/debian:unstable)	35s
unit (docker.io/library/ubuntu:latest)	31s
behave	0s
	8m 53s

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