[serverctl] fix default value for db-init config-level
Otherwise cubicweb-ctl db-init --automatic complains that "--automatic
and --config-level should not be used together" when they weren't.
Closes #3984336
\.svn
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\~$
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\.swp$
^doc/book/en/apidoc$
\.old$
syntax: regexp
.*/data/database/.*\.sqlite
.*/data/database/.*\.config
.*/data/database/tmpdb.*
.*/data/ldapdb/.*
^doc/html/
^doc/doctrees/
^doc/book/en/devweb/js_api/