feat(Provision): Update python to 2.7.7

The other version was not there anymore in the debian repos. Seems it was
removed since I tried this on Saturday.

Closes #14
Merge pull request #15 from vsaw/feature/14-libpython2.7-version-madness

feat(Provision): Update python to 2.7.7
feat(gnunet-mqtt): Add gnunet-mqtt as submodule
feat(Provision): Install automake if not present

Needed to be able to compile gnunet-mqtt.
See https://github.com/vsaw/gnunet-mqtt/issues/1

Closes #16
Merge pull request #17 from vsaw/feature/16-install-automake

feat(Provision): Install automake if not present
adds dht interaction to the testbed example