oe-selftest: devtool: add more explicit check for ls output

test_devtool_deploy_target is failing on the Yocto Project autobuilder
apparently when it attempts to cut out some fields from the list. It
doesn't fail here and I can't see what the problem lines are, so add a
check for lines with too few fields so we can get a look at them next
time it fails.

(From OE-Core rev: 2b19c74332c3899c84708946d749f88c4416cf73)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/selftest/devtool.py

@@ -93,6 +93,8 @@ class DevtoolBase(oeSelfTest):
         filelist = []
         for line in output.splitlines():
             splitline = line.split()
+            if len(splitline) < 8:
+                self.fail('_process_ls_output: invalid output line: %s' % line)
             # Remove trailing . on perms
             splitline[0] = splitline[0].rstrip('.')
             # Remove leading . on paths