osclib/list_command.py: Allow overriding reviews filter from the command line. #1825

Job	Run time
linters	1m 9s
tests (Long1)	14m 57s
tests (Long2)	12m 14s
smoke-test (registry.opensuse.org/opensuse/tumbleweed:latest)	1m 24s
tests (Rest)	10m 38s
smoke-test (registry.opensuse.org/opensuse/leap:15.6)	2m 24s
	42m 46s

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