While testing the version updates, I noticed that the
camera-calibration-parsers were missing the roscpp dependencies,
and hence do_configure failed with:

```
|   Could not find a package configuration file provided by "roscpp" with any
|   of the following names:
|
|     roscppConfig.cmake
|     roscpp-config.cmake
|
|   Add the installation prefix of "roscpp" to CMAKE_PREFIX_PATH or set
|   "roscpp_DIR" to a directory containing one of the above files.  If "roscpp"
|   provides a separate development package or SDK, be sure it has been
|   installed.
| Call Stack (most recent call first):
|   CMakeLists.txt:4 (find_package)
|
|
| -- Configuring incomplete, errors occurred!
```

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@oss.bmw-carit.de>

This patch fixes the continuous integration test by dropping
the sound-play recipe from ros-world, as it would fail with
the master branches (addresses issue #388).

https://github.com/bmwcarit/meta-ros/issues/388

In _setup_util.py.in, we use python provided by environment instead of
the generated one, as the generated python path can be arbitrarily long
(depending on the location of the build directory), and hence reaches
the shebang line limit, causing the script to fail at start-up.

The catkin developers changed the cmake-generated template _setup_util.py
to use @PYTHON_EXECUTABLE@ instead of /usr/bin/env python in changeset
bf12b40c2 [1]. We revert this change here to address the issue #384 [2].

[1] https://github.com/ros/catkin/commit/bf12b40c2a93b11c3666619a474d35bcfea20837
[2] https://github.com/bmwcarit/meta-ros/issues/384



Signed-off-by: Lukas Bulwahn <lukas.bulwahn@oss.bmw-carit.de>