oeqa.utils.commands: runCmd: return stderr output, too

Useful if one wants to separate stdout and stderr.

(From OE-Core rev: de9744c91a997a5ab0e7a19dbe13d8def8d62800)

Signed-off-by: Markus Lehtonen <markus.lehtonen@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/utils/commands.py

@@ -103,6 +103,7 @@ def runCmd(command, ignore_status=False, timeout=None, assert_error=True, **opti
     result.command = command
     result.status = cmd.status
     result.output = cmd.output
+    result.error = cmd.error
     result.pid = cmd.process.pid
 
     if result.status and not ignore_status: