Description of problem:
Even if
# hammer system-group create  --help
writes about option
    --organization-id ORGANIZATION_ID organization identifier
organization id isn't expected

Version-Release number of selected component (if applicable):
sat6-Satellite-6.0.3-RHEL-6-20140404.0-Satellite-x86_64-dvd1.iso

How reproducible:
always

Steps to Reproduce:
1. list organizations via hammer
# hammer organization list
---|------------------|------------------|------------------------------
ID | NAME             | LABEL            | DESCRIPTION                  
---|------------------|------------------|------------------------------
1  | ACME_Corporation | ACME_Corporation | ACME_Corporation Organization
---|------------------|------------------|------------------------------
2. create new group named "grupa" using hammer
# hammer system-group create --organization-id 1 --name grupa

Actual results:
# hammer system-group create --organization-id 1 --name grupa
Could not create the system group:
  Couldn't find organization '1'

Expected results:
Group created.

Additional info:
Passing organization label(name) instead of id works;
# hammer system-group create --organization-id ACME_Corporation --name grupa
System group created

Either hammer help shall be updated to expect --organization-label, or organization id shall be expected.