[Tools] Update version of maven-checkstyle-plugin
[Tools] Update version of maven-checkstyle-plugin

2.17 supports Java 8, which is used by jee integration

Change-Id: I578a24dac2a081ac554303bfefee0e575050c3f5

bmwcarit/joynr,bmwcarit/joynr,clive-jevons/joynr,bmwcarit/joynr,clive-jevons/joynr,clive-jevons/joynr,bmwcarit/joynr,bmwcarit/joynr,clive-jevons/joynr,bmwcarit/joynr,bmwcarit/joynr,bmwcarit/joynr,clive-jevons/joynr,clive-jevons/joynr,bmwcarit/joynr