option with all server tag are not revealed after deleting similar option with another tag that was covering it
scenario:
- add option with tag all
- add option with tag abc
- set server to pull config with tag abc
- get config - it shows option with tag abc
- delete option with tag abc
- get config - it should show option with tag all but it shows no options
Forge tests:
- tests/dhcpv4/kea_only/config_backend/test_cb_v4_server_tag.py::test_server_tag_global_option4
- tests/dhcpv6/kea_only/config_backend/test_cb_v6_server_tag.py::test_server_tag_global_option
Edited by Francis Dupont