httplib2 added cert validation without a complete list of root certs. See that it's fixed.

[jdunck]

In commit 864a61e we see the need to disable cert validation - this is because httplib2 has started validating by default, but has an incomplete list of root certs.

This is a bug in httplib2, but affects all users of the library (I've seen this as maintainer of python-github2 as well.)

I think httplib2 should be fixed; we've already accepted disabling the validation, but this fails under py2.5; dpnova is going to make a pull request which tries to construct with the flag, falling back to without if it fails (which would only occur if validation were not supported by httplib2, i.e. an older version of it.

This ticket is to track the bugs in httplib2:
http://code.google.com/p/httplib2/issues/detail?id=156
http://code.google.com/p/httplib2/issues/detail?id=157