toaster: keep layer name in variable history path
When converting variable history file names to relative
paths, keep the layer directory's name so that the user
can distinguish between conf files with the same name.
[YOCTO #8188]
Signed-off-by: David Reyna <david.reyna@windriver.com>
Signed-off-by: Michael Wood <michael.g.wood@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>