Updates to the Fedora development setup. (ros2#289)

Updates to support the build-from-source instructions.  Tested by
following the directions on the wiki in a fedora:30 docker container.

Update the package list to use dnf to install python3-colcon-common
extensions, which is available in Fedora 29 and newer:
https://bodhi.fedoraproject.org/updates/FEDORA-2019-8c1b78e3f3

wget and rosdep are required by the build from source instructions, and
not installed by default.

gcc-c++, patch, and make are required to build C++ packages, and may not
be installed on a fresh system. redhat-rpm-config provides hardening
flags that gcc-c++ needs.

liblsan is needed to build rosbag2 (the sanitizer isn't installed by
default when gcc-c++ is installed).  It should probably be disabled by
default, and/or added as a system rosdep.

Remove pip command - all relevant dependencies can be installed with the
system package manager.

Also, a couple of cosmetic updates:
- Put each package on a new line to match the Linux Development Setup
page formatting
- Alphabatize package list
- Re-word first paragraph to reflect that the setup is now a single
step.

Signed-off-by: Rich Mattes <[email protected]>

Author: richmattes

source/Installation/Dashing/Fedora-Development-Setup.rst

@@ -4,16 +4,53 @@ Building ROS 2 on Fedora Linux
 How to setup the development environment?
 -----------------------------------------
 
-First install a bunch of dependencies:
+The following system dependencies are required to build ROS 2 on Fedora. They can be installed with ``dnf`` as follows:
 
 .. code-block:: bash
 
-   $ sudo dnf install cppcheck cmake libXaw-devel opencv-devel poco-devel poco-foundation python3-empy python3-devel python3-nose python3-pip python3-pyparsing python3-pytest python3-pytest-cov python3-pytest-runner python3-setuptools python3-yaml tinyxml-devel eigen3-devel python3-pydocstyle python3-pyflakes python3-coverage python3-mock python3-pep8 uncrustify python3-argcomplete python3-flake8 python3-flake8-import-order asio-devel tinyxml2-devel libyaml-devel python3-lxml python3-vcstool python3-lark-parser
+   $ sudo dnf install \
+     asio-devel \
+     cmake \
+     cppcheck \
+     eigen3-devel \
+     gcc-c++ \
+     liblsan \
+     libXaw-devel \
+     libyaml-devel \
+     make \
+     opencv-devel \
+     patch \
+     python3-argcomplete \
+     python3-colcon-common-extensions \
+     python3-coverage \
+     python3-devel \
+     python3-empy \
+     python3-lark-parser \
+     python3-lxml \
+     python3-mock \
+     python3-nose \
+     python3-pep8 \
+     python3-pip \
+     python3-pydocstyle \
+     python3-pyflakes \
+     python3-pyparsing \
+     python3-pytest \
+     python3-pytest-cov \
+     python3-pytest-runner \
+     python3-rosdep \
+     python3-setuptools \
+     python3-vcstool \
+     python3-yaml \
+     poco-devel \
+     poco-foundation \
+     python3-flake8 \
+     python3-flake8-import-order \
+     redhat-rpm-config \
+     tinyxml-devel \
+     tinyxml2-devel \
+     uncrustify \
+     wget
+
+
+With this done, you can follow the rest of the `instructions <Dashing_linux-dev-get-ros2-code>` to fetch and build ROS2.
 
-Then install lark-parser from pip:
-
-.. code-block:: bash
-
-   $ pip3 install lark-parser==0.7.1
-
-With this done, you can follow the rest of the `instructions <linux-dev-get-ros2-code>` to fetch and build ROS2.