[maven-release-plugin] prepare release dasein-cloud-core-2015.06.2
[maven-release-plugin] prepare release dasein-cloud-core-2015.06.2

vladmunthiu/dasein-cloud-core,jeffrey-yan/dasein-cloud-core,JanewzhWang/dasein-cloud-core,drewlyall/dasein-cloud-core,unwin/dasein-cloud-core,daniellemayne/dasein-cloud-core