'Adds ``values`` to the end of ``list``.
Example:
| Append To List | ${L1} | xxx |   |   |
| Append To List | ${L2} | x   | y | z |
| ${L1} = [\'a\', \'xxx\']
| ${L2} = [\'a\', \'b\', \'x\', \'y\', \'z\']'

def append_to_list(self, list_, *values):

    for value in values:
        list_.append(value)
