s4:torture/ldap: Add test for netlogon over tcp

s4:torture/ldap: Add test for netlogon over tcp

This patch moves the udp netlogon tests from cldap.c
to netlogon.c and passes a generic netlogon-send
function as parameter.

Therefore a tcp replacement for cldap_netlogon is also added.
The two variants tcp and udp are added as 2 new torture tests:

ldap.netlogon-udp & ldap.netlogon-tcp
Both tests succeed.

Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Nadezhda Ivanova <nivanova@symas.com>
(cherry picked from commit 767bd6a4d49efce1c554bb0bc8130d74331b0bd8)