* tools/call-dirmngr.c (wkd_get_policy_flags): New.
* tools/gpg-wks.h (struct policy_flags_s, policy_flags_t): New.
* tools/wks-util.c (wks_parse_policy): New.
* tools/gpg-wks-client.c (command_send): Get the policy flags to show
a new info line.
* tools/gpg-wks-server.c (get_policy_flags): New.
(process_new_key): get policy flag and add a stub for "auth-submit".
(command_list_domains): Check policy flags.