libtaskotron: upgrade pytap13

[Lukas Brabec]

New version of pytap13 is needed since commit [ea1e2f7]. Test introduced in this
commit will fail (error DID NOT RAISE) if old pytap13 is kept. 

Please, upgrade your pytap13 to version 0.1.0, run:
$ pip install pytap13 --upgrade

or upgrade all requirements:
$ pip install -r requirements.txt --upgrade


LB


[ea1e2f7] https://bitbucket.org/fedoraqa/libtaskotron/commits/ea1e2f78647101450ad1944131ef8e31bcab3949