hamming: updated tests to v2.2.0 (#1642)
hamming: updated tests to v2.2.0 (#1642)

Updated hamming test cases to v2.2.0. Fixes #1621
jmluy/xpython,exercism/python,smalley/python,behrtam/xpython,N-Parsons/exercism-python,jmluy/xpython,smalley/python,exercism/xpython,N-Parsons/exercism-python,exercism/xpython,exercism/python,behrtam/xpython