ipaserver: Fix deployment after Bronze-bit fix

As FreeIPA now requires MS-PAC to be set in ipaKrbAuthzData to trigger
PAC generation, there's a timing issue that causes API malfunction which
is long enough to cause the client part insallation to fail.

By restarting KDC after DS password is set, we force cached values to be
refreshed, allowing the API to work correctly.

Resolves: https://github.com/freeipa/ansible-freeipa/issues/1200