add python-defusedxml

[codebot]

Tested on Ubuntu. I attempted to chase it down on other distros.

[tfoote]

+1 packages found at:

ubuntu: https://packages.ubuntu.com/search?keywords=python-defusedxml
debian: https://packages.debian.org/search?keywords=python-defusedxml
arch: https://www.archlinux.org/packages/extra/any/python-defusedxml/
fedora: https://admin.fedoraproject.org/pkgdb/package/rpms/python-defusedxml/
gentoo: https://packages.gentoo.org/packages/dev-python/defusedxml

[tfoote]

Note this is not available on Saucy so it cannot go into indigo until after the next sync when saucy is disabled.

[wjwwood]

You need OS X (pip).

[codebot]

Thanks for the feedback. I'll add a pip key and squash.

In terms of Saucy, I was thinking of only adding the actual rosmaster dependency and code in Kinetic. Is it OK to add the rosdep key still?

[tfoote]

It's fine to add the rules at any time. We could do it for Kinetic only but this seems like an improvement that could be considered for backporting.

[dirk-thomas]

The package is available in Saucy.