Added noetic to CI build.

.travis.yml

@@ -8,9 +8,18 @@ language: cpp
 os: linux
 matrix:
   include:
-  - name: "Bionic melodic"
-    dist: bionic
-    env: ROS_DISTRO=melodic
+    - name: "Bionic melodic AMD64"
+      arch: amd64
+      dist: bionic
+      env:
+        - ROS_DISTRO=melodic
+        - ROS_PYTHON_PKGS="python-catkin-pkg python-catkin-tools python-rosdep python-wstool"
+    - name: "Focal noetic AMD64"
+      arch: amd64
+      dist: focal
+      env:
+        - ROS_DISTRO=noetic
+        - ROS_PYTHON_PKGS="python3-catkin-pkg python3-catkin-tools python3-osrf-pycommon python3-rosdep python3-wstool"
 
 # Configuration variables. All variables are global now, but this can be used to
 # trigger a build matrix for different ROS distributions if desired.
@@ -32,7 +41,7 @@ before_install:
   - sudo apt-key adv --keyserver 'hkp://keyserver.ubuntu.com:80' --recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654
   - sudo apt-get update -qq
   - sudo apt-get install dpkg
-  - sudo apt-get install -y python-catkin-pkg python-catkin-tools python-rosdep python-wstool ros-$ROS_DISTRO-ros-base ros-$ROS_DISTRO-code-coverage
+  - sudo apt-get install -y $ROS_PYTHON_PKGS ros-$ROS_DISTRO-ros-base ros-$ROS_DISTRO-code-coverage
   - source /opt/ros/$ROS_DISTRO/setup.bash
   # Prepare rosdep to install dependencies.
   - sudo rosdep init