timer-tests: initial commit

Following updates in the ROS Hydro distribution

The patch for diagnostics has been merged in version 1.8.2, and
hence is removed.

The patch for the image_view package has been merged in 1.11.8, and
hence is removed.

making rostest optional in most packages

recipe updates to keep in-sync with the hydro distribution

Besides updating, this commit improves the DESCRIPTION.

The patches provided upstream are part of 1.11.6 and are removed.

Besides updating, this commit improves the line breaks in the
DESCRIPTION.

Besides updating ros-comm, this commit removes the second hash
values, that probably slipped-in during the last update.

rosserial-python: adding missing run dependencies

Resolves following import errors in rosserial_python/SerialClient.py:
-ImportError: No module named rosserial_msgs.msg
-ImportError: No module named diagnostic_msgs.msg

Adding various missing run dependencies

Resolves:
  File "/usr/lib/python2.7/site-packages/tf/transformations.py", line 174, in <module>
    import numpy
ImportError: No module named numpy

Resolves import error in __init__.py files derived from catkin/cmake/templates/__init__.py.in template,
e.g. in tf:
  File "/usr/lib/python2.7/site-packages/tf/__init__.py", line 7, in <module>
    from pkgutil import extend_path
ImportError: No module named pkgutil

Resolves:
  File "/usr/lib/python2.7/site-packages/nav_msgs/msg/_GetMapActionGoal.py", line 9, in <module>
    import actionlib_msgs.msg
ImportError: No module named actionlib_msgs.msg

Resolves:
  File "/usr/lib/python2.7/site-packages/rosservice/__init__.py", line 61, in <module>
    import rosmsg
ImportError: No module named rosmsg