hkps: Fix host name verification when using pools.
* common/http.c (send_request): Set the requested for SNI. * dirmngr/ks-engine-hkp.c (map_host): Return the poolname and not the selecting a host.
Thanks to davidw for figuring out the problem.
- GnuPG-bug-id: T1792
- Signed-off-by: Werner Koch <wk@gnupg.org>