use specified version sonar plugin

Author: kosteman

.travis.yml

@@ -6,15 +6,15 @@ addons:
     organization: "sbtqasonarkey"
     token: $SONAR_TOKEN
 jdk:
-- oraclejdk11
+- oraclejdk8
 before_install:
 - if [ ! -z "$GPG_SECRET_KEYS" ]; then echo $GPG_SECRET_KEYS | base64 --decode | $GPG_EXECUTABLE --import; fi
 - if [ ! -z "$GPG_OWNERTRUST" ]; then echo $GPG_OWNERTRUST | base64 --decode | $GPG_EXECUTABLE --import-ownertrust; fi
 install:
   - mvn clean --settings .travis/settings.xml install -Dmaven.javadoc.skip=true -Dgpg.skip -B -V
 script:
 #  - mvn org.jacoco:jacoco-maven-plugin:prepare-agent -Dmaven.javadoc.skip=true -Dgpg.skip -DskipTests=true
-  - mvn org.jacoco:jacoco-maven-plugin:prepare-agent sonar:sonar -Dmaven.javadoc.skip=true -Dgpg.skip -DskipTests=true
+  - mvn org.jacoco:jacoco-maven-plugin:prepare-agent org.sonarsource.scanner.maven:sonar-maven-plugin:3.7.0.1746:sonar -Dmaven.javadoc.skip=true -Dgpg.skip -DskipTests=true
 deploy:
 - provider: script
   script: ".travis/deploy.sh"