New 'Smart Combine Lists' keyword.
New 'Smart Combine Lists' keyword.

This version of Combine Lists ignores arguments which are not valid
lists.

Also, corrected a 79+ char line in lib/list_utils.robot.

Change-Id: I250d87ee16500b905db13cd0d6d2355b5920306c
Signed-off-by: Michael Walsh <10404802c7de463f402c4a18638106ca1b12ef61@us.ibm.com>

openbmc/openbmc-test-automation,openbmc/openbmc-test-automation