Description of problem:
The ipa man page for ipa group-add-member says:

ipa group-add-member bar --users=admin,foo

It appears this does not work.

Version-Release number of selected component (if applicable):
3.3.3-28.el7_0.1

How reproducible:
100%

Steps to Reproduce:
1. Create some groups
2. Create some users
3. ipa group-add-member ose-user
--users=fancyuser1,normaluser1,teamuser1,teamuser2

Actual results:
  Group name: ose-user
  Description: Users with OpenShift access
  GID: 426800001
  Member users: fancyuser1
  Failed members:
    member user: fancyuser1,normaluser1,teamuser1,teamuser2: no such entry
    member group:
-------------------------
Number of members added 0
-------------------------

Expected results:
As per man page, users should be added to group.

Additional info:
--users=foo --users=bar or --users={foo,bar} are alleged to work, but are not
indicated in the man page.