tree a318f04cba67eb3d9c083fdeb0787594f2bc1d78
parent 35a90d136380eefd5df6da012df005f348e458c3
author tylerliu <tylersiqi@163.com> 1600231043 -0700
committer tylerliu <tylersiqi@163.com> 1600231043 -0700

fix ndncert-send-email-challenge: allow both python 2 and 3

This is a fix that allows importing of ConfigParser in both python 2
and python 3. It was found by John Dehart when trying to run on a server
that uses python 3 as default python interpreter.

Change-Id: Id6a384609b1725759eaa41919021af8547857d8e