* Use f'' strings instead of .format().
* Correct sequence of imports.
* Remove a superfluous import.
* Add missing documentation.
* Replace yield by return.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Provide a unit test for
* efidebug boot add
* efidebug boot order
* bootefi bootmgr
* initrd via EFI_LOAD_FILE2_PROTOCOL
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>