public ModifyableColumnFamilyDescriptor setEncryptionKey(byte[] keyBytes) {
      return setValue(ENCRYPTION_KEY_BYTES, new Bytes(keyBytes));
    }
Set the raw crypto key attribute for the family
@return this (for chained invocation)
hbase-client/src/main/java/org/apache/hadoop/hbase/client/ColumnFamilyDescriptorBuilder.java