Description of problem:
After upgrading to 1.3 performing a remote kickstart of a virtual system fails after the system tries to update spacewalk-koan.  

Version-Release number of selected component (if applicable): 1.3

How reproducible:
Have spacewalk-koan installed and provision a new virtual system. 

Steps to Reproduce:
1. Run virtual system kickstart form spacewalk web panel
2. Run rhn_check -vv on remote system 
3. Kickstart fails: Error while executing packages action: empty transaction
  
Actual results:
D: Called update [['spacewalk-koan', '0.2.16', '1.el5', '', 'noarch']]
Package spacewalk-koan-0.2.16-1.el5.noarch already installed and latest version
D: Sending back response ((6,), 'Error while executing packages action: empty transaction', {})
D: do_call packages.checkNeedUpdate ('rhnsd=1',) {}

rhn_check exists and kickstart fails.

Expected results:
Continue to create the virtual guest and finish the kickstart 

Additional info:
System:
CentOS 5.5 x86_64
2.6.18-194.32.1.el5
KVM setup 

Client packages:
spacewalk-backend-libs-1.3.56-1.el5
spacewalk-client-repo-1.3-1.el5
spacewalk-koan-0.2.16-1.el5
koan-2.0.9-1.el5
rhncfg-actions-5.9.48-1.el5
rhn-check-1.3.12-1.el5
rhnsd-4.9.8-1.el5
rhnmd-5.3.7-1.el5
rhncfg-5.9.48-1.el5
rhn-client-tools-1.3.12-1.el5
rhn-virtualization-common-5.4.19-1.el5
yum-rhn-plugin-1.3.6-1.el5
rhnlib-2.5.33-1.el5
rhn-setup-1.3.12-1.el5
rhncfg-client-5.9.48-1.el5