Update StackdriverStatsExporter to use the new configuration class. (#948)
Update StackdriverStatsExporter to use the new configuration class. (#948)


bogdandrutu/instrumentation-java,census-instrumentation/opencensus-java,songy23/instrumentation-java,sebright/opencensus-java,songy23/instrumentation-java,sebright/opencensus-java,bogdandrutu/instrumentation-java,census-instrumentation/opencensus-java,bogdandrutu/opencensus-java,bogdandrutu/opencensus-java,songy23/instrumentation-java,bogdandrutu/opencensus-java,sebright/instrumentation-java,census-instrumentation/opencensus-java,sebright/instrumentation-java,sebright/opencensus-java