Bug#894647: python-rostest should depend on python-roslaunch

[Johannes Schauer]

Package: python-rostest
Severity: normal

When running /usr/bin/rostest I get:

Traceback (most recent call last):
  File "/usr/share/rostest/cmake/../../../bin/rostest", line 36, in <module>
    rostestmain()
  File "/usr/lib/python2.7/dist-packages/rostest/__init__.py", line 273, in rostestmain
    from rostest.rostest_main import rostestmain as _main
  File "/usr/lib/python2.7/dist-packages/rostest/rostest_main.py", line 46, in <module>
    import roslaunch
ImportError: No module named roslaunch

The binary package should depend on python-roslaunch.