Description of problem:
When provisioning a system via images (templates) in a subnet with discovery feature enabled, the system is booted in discovery mode and the automatic provisioning fails.


Steps to Reproduce:
1. Enable discovery feature
2. Provision new host using an image (template)

Actual results:
new host boots into discovery mode

Expected results:
new host boots based on template and Kickstart Finish template is performed

Additional info:

when discovery feature is enabled, /var/lib/tftpboot/pxelinux.cfg/default is changed to boot into discovery mode by default.

Other than with provisioning from scratch, Foreman does not create individual tftp boot records for image based provisioning. That leads to this situation described above.