Update .travis.yml

Author: Theosakamg

.travis.yml

@@ -19,7 +19,7 @@ cache:
 before_install:
 - docker pull theosakamg7/ros2java:latest
 - cd $HOME_BUILD && env | grep -E '^TRAVIS_' > .env
-- echo "\n CI_BUILD_NUMBER=\"$TRAVIS_BUILD_NUMBER\"\n CI_PULL_REQUEST=\"$TRAVIS_PULL_REQUEST\"\n CI_BRANCH=\"$TRAVIS_BRANCH\"\n" >> .env
+- echo -e "\nCI_BUILD_NUMBER=\"$TRAVIS_BUILD_NUMBER\"\nCI_PULL_REQUEST=\"$TRAVIS_PULL_REQUEST\"\nCI_BRANCH=\"$TRAVIS_BRANCH\"\n" >> .env
 - echo "INSTALL/BUILD ROS2 AMENT..."
 - cd $HOME_BUILD && mkdir -p ament_ws/src && cd $HOME_BUILD/ament_ws
 - docker run -u "$UID" -it --rm -v `pwd`:`pwd` -w `pwd` theosakamg7/ros2java:latest sh -c "/usr/bin/wget https://gist.githubusercontent.com/Theosakamg/e6084cfafa6b7ea690104424cef970a2/raw/ament_java.repos"