CDP and OCSP URIs for a one or multiple certification authorities
can be added via the VICI interface. swanctl allows to read
definitions from a new authorities section.
As we now pass the vici connection to the command dispatcher callback, we can't
parse the --uri option to create the connection from the same callback. Instead
pre-process the common command options in a separate loop, and ignore the same
options while processing the actual command.
Tobias Brunner