current-boot-entry-heuristic-regex

A map of ssh public keys to install for the root user

Certain UEFI firmware vendors do not expose the BootCurrent UEFI firmware variable. When that is missing, we have no choice but to fall back to trying to figure out what UEFI boot entry to use via regex-based heuristics. This param defines the regex to use to determine which BootXXXX variable should be picked as the current one. It will be processed via egrep -i, and the first variable picked will win.