Coral-Schema alias output upper-cased schema even if I explicitly alias to lower case

[rzhang10]

To reproduce this issue:

add this test in ViewToAvroSchemaConverterTests and run it:

  @Test
  public void foo() {
    String viewSql = "CREATE VIEW v AS SELECT id as id FROM basecomplex";
    TestUtils.executeCreateViewQuery("default", "v", viewSql);

    ViewToAvroSchemaConverter viewToAvroSchemaConverter = ViewToAvroSchemaConverter.create(hiveMetastoreClient);
    Schema actualSchema = viewToAvroSchemaConverter.toAvroSchema("default", "v", false, false);

    System.out.println(actualSchema);
  }

the output will be:

{"type":"record","name":"v","namespace":"default.v","fields":[{"name":"Id","type":"int"}]}

Which shows the column name is Id rather than the explicit lower-cased alias: id.