Cleanup on DNS for LVS service IPs

Removes several outdated reverse DNS entries
  (for which there is no LVS service def or forward DNS)

Adds login-lb records for eqiad
Removes outdated payments-lb.eqiad (forward + rev)

Do not merge this yet, it needs some more manual validation!

Change-Id: I43c4bb65896c0f8bff34b443330fd8642a9c49fb