Fix test-ng build error
Fix test-ng build error

Force junit provider in surefire plugin, testng provider in failsafe plugin

hawkular/hawkular-metrics,hawkular/hawkular-metrics,mwringe/hawkular-metrics,burmanm/hawkular-metrics,mwringe/hawkular-metrics,pilhuhn/rhq-metrics,burmanm/hawkular-metrics,jotak/hawkular-metrics,ppalaga/hawkular-metrics,burmanm/hawkular-metrics,hawkular/hawkular-metrics,burmanm/hawkular-metrics,pilhuhn/rhq-metrics,ppalaga/hawkular-metrics,hawkular/hawkular-metrics,tsegismont/hawkular-metrics,tsegismont/hawkular-metrics,jotak/hawkular-metrics,mwringe/hawkular-metrics,jotak/hawkular-metrics,pilhuhn/rhq-metrics,pilhuhn/rhq-metrics,ppalaga/hawkular-metrics,jotak/hawkular-metrics,tsegismont/hawkular-metrics,ppalaga/hawkular-metrics,tsegismont/hawkular-metrics,mwringe/hawkular-metrics