Update travis config (RobotWebTools#89)

Author: jihoonl

.travis.yml

@@ -1,8 +1,6 @@
 # This config file for Travis CI utilizes ros-industrial/industrial_ci package.
 # For more info for the package, see https://github.com/ros-industrial/industrial_ci/blob/master/README.rst
 
-dist: trusty
-sudo: required
 services:
   - docker
 language: generic
@@ -18,23 +16,24 @@ notifications:
 
 env:
   matrix:
-    - ROS_DISTRO="kinetic"   ROS_REPOSITORY_PATH=http://packages.ros.org/ros/ubuntu  USE_DEB=true
-    - ROS_DISTRO="indigo"    ROS_REPOSITORY_PATH=http://packages.ros.org/ros/ubuntu  USE_DEB=true
-    - ROS_DISTRO="kinetic"   PRERELEASE=true PRERELEASE_DOWNSTREAM_DEPTH=0
-    - ROS_DISTRO="indigo"   PRERELEASE=true PRERELEASE_DOWNSTREAM_DEPTH=0
+    - ROS_DISTRO=kinetic ROS_REPO=ros-shadow-fixed UPSTREAM_WORKSPACE=debian OS_NAME=ubuntu OS_CODE_NAME=xenial
+    - ROS_DISTRO=melodic ROS_REPO=ros-shadow-fixed UPSTREAM_WORKSPACE=debian OS_NAME=ubuntu OS_CODE_NAME=bionic
+    - ROS_DISTRO=melodic ROS_REPO=ros-shadow-fixed UPSTREAM_WORKSPACE=debian OS_NAME=debian OS_CODE_NAME=stretch
 
 matrix:
   allow_failures:
-    - env: ROS_DISTRO="kinetic"   PRERELEASE=true PRERELEASE_DOWNSTREAM_DEPTH=0
-    - env: ROS_DISTRO="indigo"   PRERELEASE=true PRERELEASE_DOWNSTREAM_DEPTH=0
+    - env: ROS_DISTRO=melodic ROS_REPO=ros-shadow-fixed UPSTREAM_WORKSPACE=debian OS_NAME=debian OS_CODE_NAME=stretch
+
+      #- env: ROS_DISTRO="kinetic"   PRERELEASE=true PRERELEASE_DOWNSTREAM_DEPTH=0
+      #- env: ROS_DISTRO="melodic"   PRERELEASE=true PRERELEASE_DOWNSTREAM_DEPTH=0
 
 branches:
   only:
     - master
     - develop
 
 install:
-  - git clone https://github.com/ros-industrial/industrial_ci.git .ci_config
+  - git clone --quiet --depth 1 https://github.com/ros-industrial/industrial_ci.git .industrial_ci
 
 script:
-  - source .ci_config/travis.sh
+  - source .industrial_ci/travis.sh