We can reach the method in toaster.bbclass which tries to read from
the files-in-image.txt file via a build which doesn't create that
file (e.g. "bitbake core-image-minimal -c rootfs"). This causes
the build to fail with an exception.
Check that this file exists before trying to read from it.
[YOCTO #9784]
(From OE-Core rev: 8b369cdd73ab17cdf834a591b97b25840caeb740)
Signed-off-by: Elliot Smith <elliot.smith@intel.com>
Signed-off-by: bavery <brian.avery@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>