bug20857: prepush errors from python
bug20857: prepush errors from python

Fixed python-prepush/nosetests to work with python
versions less than 2.6.

No documentation or release note needed.
Internal test change only.

Tests added for:     None
make test-suite run? python-prepush

Change-Id: Idc28fdbe380b105f3ff13d169b9dbb011eaac589
Reviewed-on: https://gerrit.franz.com:9080/1999
Reviewed-by: Ahmon Dancy <8f7d8ce2c6797410ae95fecd4c30801ee9f760ac@franz.com>
Tested-by: Kevin Layer <d54c2aa2f61603022c71493f093f0c718419ca13@franz.com>

franzinc/agraph-python,franzinc/agraph-python,franzinc/agraph-python,franzinc/agraph-python