v2.3.0

Changelog:

d364a30 preflight: add custom_repo_state option
b3cd42a cephadm_bootstrap: add cluster_network option
e205e19 doc: add missing details about 'ceph_origin: custom'
6237b3c mergify: add initial configuration
a635075 doc: fix typo
3a1c0c3 doc: fix a typo in documentation
d5d0433 cephadm_bootstrap: support --allow-fqdn-hostname option
690ef7f library: add cephadm_registry_login module