ros: require orogen_ros explicitly
ros: move rospack_find to orogen_ros package
ros: move functionality of types.rb to package orogen_ros
ros: add process server implementation
ros: add tests

Currently, these test have dependencies on external ros packages.
ros: rename process server to process manager
ros: add parse_run_options
ros: fix ProcessManager and LauncherProcess
ros: disable log_all_configuration for ros nodes
ros: set name of node model
ros: add loading of Orocos::ROS
ros: don't verify port if the spec is available

Avoids to query running nodes in order to get the information about ports.
ros: fix killing of launcher processes
fix: pretty print in topic
ros: use rosnode_normalize_name for ros_name
ros: update test specs to changed interfaces
ros: simulate state changes of ros nodes
ros: fix logging for ProcessManager#kill
ros: adapt process_manager loading methods to refer to ros
ros: fix process termination handling in process manager