static Double getRegionReportPercent(Configuration conf) {
    return conf.getDouble(POLICY_REFRESHER_CHORE_REPORT_PERCENT_KEY,
      POLICY_REFRESHER_CHORE_REPORT_PERCENT_DEFAULT);
  }
Extracts the percent of Regions for a table to have been reported to enable quota violation
state change.
@param conf The configuration object.
@return The percent of regions reported to use.
hbase-server/src/main/java/org/apache/hadoop/hbase/quotas/SpaceQuotaRefresherChore.java