Description of problem:
If I try to delete a record that doesn't exist, the tool prints out the entries in the zone, gives no error message, and returns a 0 to the console.

Version-Release number of selected component (if applicable):
ipa-server-2.0-0.2011011418gita68b2d2.fc14.x86_64

How reproducible:
always

Steps to Reproduce:
1. ipa dnsrecord-del <zone> <record> --ns-rec-<anything wrong>
  
Actual results:
[root@ipaqavmh ipa-dns]# ipa  dnsrecord-del newzone1 @ --ns-rec=gar.bag.e.
  Record name: @
  MX record: 3.4.5.6
  NS record: 10.16.98.193, 127.0.0.1.
[root@ipaqavmh ipa-dns]# echo $?
0

Expected results:
[root@ipaqavmh ipa-dns]# ipa  dnsrecord-del newzone1 @ --ns-rec=gar.bag.e.
<various "that didn't work" messages>

echo $? 
<something not 0>