Bumped checkstyle version for Java 8 support
Bumped checkstyle version for Java 8 support

Honoo/HubTurbo,saav/HubTurbo,gaieepo/HubTurbo,Sumei1009/HubTurbo,HyungJon/HubTurbo,saav/HubTurbo,ianngiaw/HubTurbo,ianngiaw/HubTurbo,HyungJon/HubTurbo,gaieepo/HubTurbo,Honoo/HubTurbo,Sumei1009/HubTurbo