Various os_capacity fixes #1795

Job	Run time
Tox pep8 with Python 3.8	22s
Tox releasenotes with Python 3.8	25s
Tox docs with Python 3.8	22s
Build Kayobe Image / Build kayobe image	8m 8s
aio (CentOS OVN) / All in one	1m 22s
aio (Rocky OVS) / All in one	1m 18s
aio (Rocky OVN) / All in one	1m 23s
aio (CentOS OVS) / All in one	1m 26s
aio (Ubuntu Jammy OVN) / All in one	1m 10s
aio (Ubuntu Jammy OVS) / All in one	1m 9s
aio (Rocky 9 OVS) / All in one	1m 9s
aio (Rocky 9 OVN) / All in one	1m 27s
aio (Ubuntu OVN) / All in one	1m 20s
aio (Ubuntu OVS) / All in one	1m 16s
	22m 17s

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