Some faulty iPXE FW cannot load kernel or initrd file causing DoS on
http server (especially when environment has hundreds of faulty nods).
This patch changes the behavior to poweroff the hardware node after 10
unsuccessful retries to get kernel or initrd over http.
Story: #2002928
Task: #22915
Change-Id: Iec4650499c51c4c7dac38c279728d294ed3434b6
Co-Authored-By: Julia Kreger <juliaashleykreger@gmail.com>