Description of problem:
trying to remove a member from a group that doesn't exist in that group returns 0. 

Version-Release number of selected component (if applicable):
ipa-server-2.0-2.20090513.el5ipa

How reproducible:
always

Steps to Reproduce:
1. kinit as admin
2. ipa group-add examplegroup
3. ipa group-add exampleremove
4. ipa group-add-member --groups=exampleremove examplegroup
5. ipa group-remove-member --groups=exampleremove examplegroup
6. ipa group-remove-member --groups=exampleremove examplegroup
  
Actual results:
[root@iparhel5-vma ~]# ipa group-remove-member --groups=exampleremove examplegroup
These entries failed to be removed from the group:
'cn=exampleremove,cn=groups,cn=accounts,dc=dsdev,dc=sjc,dc=redhat,dc=com'
[root@iparhel5-vma ~]# echo $?
0

Expected results:
[root@iparhel5-vma ~]# ipa group-remove-member --groups=exampleremove examplegroup
[root@iparhel5-vma ~]# ipa group-remove-member --groups=exampleremove examplegroup
[root@iparhel5-vma ~]# echo $?
<something not 0>

Additional info:
This seems to be related to various other bugs, I'm creating this as a placeholder.