Skip hbase:meta table scan if the normalizer not enabled for any of the tables as well as default table wise normalization disabled

  public boolean isNormalizerOn() {
    byte[] upData = super.getData(false);
    try {
      // if data in ZK is null, use default of on.
      return upData == null || parseFrom(upData).getNormalizerOn();
    } catch (DeserializationException dex) {
      LOG
        .error("ZK state for RegionNormalizer could not be parsed " + Bytes.toStringBinary(upData));
      // return false to be safe.
      return false;
    }
  }

  public boolean normalizeRegions(final NormalizeTableFilterParams ntfp,
    final boolean isHighPriority) throws IOException {
    if (regionNormalizerManager == null || !regionNormalizerManager.isNormalizerOn()) {
      LOG.debug("Region normalization is disabled, don't run region normalizer.");
      return false;
    }
    if (skipRegionManagementAction("region normalizer")) {
      return false;
    }
    if (assignmentManager.hasRegionsInTransition()) {
      return false;
    }

    final Set<TableName> matchingTables = getTableDescriptors(new LinkedList<>(),
      ntfp.getNamespace(), ntfp.getRegex(), ntfp.getTableNames(), false).stream()
        .map(TableDescriptor::getTableName).collect(Collectors.toSet());
    final Set<TableName> allEnabledTables =
      tableStateManager.getTablesInStates(TableState.State.ENABLED);