Description of problem:
I call method channel.software.listErrata by API and I got other result than I suppose (documentation). But when I call method findByCve I got correct keys of data. 

>> client.errata.findByCve(key, "CVE-2008-3270")
[{'date': '8/14/08', 'advisory_name': 'RHSA-2008:0815', 'advisory_type': 'Security Advisory', 'id': 1962, 'advisory_synopsis': 'Moderate: yum-rhn-plugin security update'}]

>> client.channel.software.listErrata(key, "redhat-rhn-proxy-5.6-server-x86_64-6")
{'advisory_type': 'Bug Fix Advisory', 'issue_date': '2014-11-25 00:00:00', 'advisory': 'RHBA-2014:1902', 'last_modified_date': '2014-11-25 10:03:22', 'synopsis': 'Red Hat Network Proxy server spacewalk-proxy bug fix update', 'update_date': '2014-11-25 00:00:00'}

array:

    struct - errata
        int "id" - Errata ID.
        string "date" - Date erratum was created.
        string "update_date" - Date erratum was updated.
        string "advisory_synopsis" - Summary of the erratum.
        string "advisory_type" - Type label such as Security, Bug Fix
        string "advisory_name" - Name such as RHSA, etc


Version-Release number of selected component (if applicable):
spacewalk-java-2.3.8-96.el6sat.noarch

How reproducible:
always

Steps to Reproduce:
1. go to /rhn/apidoc/handlers/ErrataHandler.jsp#findByCve  and /rhn/apidoc/handlers/ChannelSoftwareHandler.jsp#listErrata
2. client.errata.findByCve(key, "CVE-2008-3270")
3. client.channel.software.listErrata(key, "redhat-rhn-proxy-5.6-server-x86_64-6")
4. ['advisory_type', 'issue_date', 'advisory', 'last_modified_date', 'synopsis', 'update_date'] vs ['date', 'advisory_name', 'advisory_type', 'id', 'advisory_synopsis']

Actual results:
Mismatch between keys issue_date and date. 

Expected results:
Same key for methods and documentation.