Original FRE for kerberos over http (aka KdcProxy) is #4801

How to test:

1. Setup master and client

2. On master block both tcp and udp port 88 (only for client's ip):

   iptables -A INPUT -p tcp -s %client_ip% --dport 88 -j DROP
   iptables -A INPUT -p udp -s %client_ip% --dport 88 -j DROP

3. On client edit /etc/krb5.conf and substitute both 'kdc' and 'master_kdc' values with

   https://%master_hostname%/KdcProxy

4. Run kinit on client

Expected results:[[BR]]
kinit successful