Use log_info, log_error, log_success functions instead of the colors

.travis/build-sonar.sh

@@ -5,7 +5,7 @@ source .travis/common-functions.sh
 source .travis/colors.sh
 
 VERSION=$(./mvnw -q -Dexec.executable="echo" -Dexec.args='${project.version}' --non-recursive org.codehaus.mojo:exec-maven-plugin:1.5.0:exec | tail -1)
-echo_yellow "[ INFO] Building PMD Sonar ${VERSION} on branch ${TRAVIS_BRANCH}"
+log_info "Building PMD Sonar ${VERSION} on branch ${TRAVIS_BRANCH}"
 
 if ! travis_isPush; then
     echo "Not updating sonar, since this is not a push!"
@@ -25,9 +25,9 @@ echo "MAVEN_OPTS='-Xms1g -Xmx1g --add-modules java.se.ee'" > ${HOME}/.mavenrc
     ./mvnw clean org.jacoco:jacoco-maven-plugin:prepare-agent package sonar:sonar -Dsonar.host.url=https://sonarcloud.io -Dsonar.login=${SONAR_TOKEN} -B -V
 
     if [ $? -ne 0 ]; then
-        echo_red "[ERROR] Error updating sonar..."
+        log_error "Error updating sonar..."
     else
-        echo_green "[ INFO] New sonar results: https://sonarcloud.io/dashboard?id=net.sourceforge.pmd%3Apmd"
+        log_success "New sonar results: https://sonarcloud.io/dashboard?id=net.sourceforge.pmd%3Apmd"
     fi
     true
 )