modify CRSTransform to ignore datum shift（增加一个函数，可以忽略Datum Shift）

[scially]

Is this PR related to a proposed Issue?

1. The original CRSTransform considering the datum shift between different coordinate systems, but for some coordinate transformations with low accuracy , sometimes this parameter does not need to be considered, so we add method public boolean CRSTransform(String sourceEpsgCRSCode, String targetEpsgCRSCode, boolean lenient)
2. Because SpatialRdd uses String sourceEpsgCRSCode to save the coordinate information, so if the user wants to consider the difference of Datum Shift, he must define CoordinateReferenceSystem to set Datum, but it needs to be changed here SaptialRdd (such as replacing sourceEpsgCRSCode with CoordinateReferenceSystem, or not considering Datum Shift directly), I need to discuss with you.
3. In the test method onceExecutedBeforeAll of ShapefileReaderTest class, hdfsURI is 'localhost', but in some environments, Hadoop will prompt that it should be 127.0.0.1, although the effect is the same, switching to 127.0.0.1 is certainly no problem.

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1. 原来GeoSpark里的CRSTransform默认是考虑了Datum Shfit，这会导致在有些坐标转换的时候出错（比如EPSG:4326, EPSG:4490），GeoTools会抛出异常，所以我建议增加一个CRSTransform，第三个参数是boolean，运行用户忽略这个差异（因为对于精度不高的坐标转换，不用考虑这个差异的）。
2. 因为SpatialRdd是用了 String sourceEpsgCRSCode来保存的坐标信息，所以用户如果要考虑Datum Shift差异，他应该是自己定义坐标参考系CoordinateReferenceSystem来设置Datum，但是这里就需要改动SaptialRdd了（比如用CoordinateReferenceSystem替换sourceEpsgCRSCode，或者就干脆直接不考虑Datum Shift），我就先不动，需要在和于嘉博士你讨论下。
3. 在ShapefileReaderTest测试类中onceExecutedBeforeAll的测试方法里，hdfsURI是'localhost'，但是在一些测试环境里，Hadoop会提示应该是127.0.0.1，虽然效果是一样的，但是换成127.0.0.1肯定是没有问题的。

What changes were proposed in this PR?

1. ShapefileReaderTest, method: onceExecutedBeforeAll
2. SpatialRDD, method: CRSTransform

How was this patch tested?

1. Existing test cases are enough

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1. 现有用例满足测试要求

Did this PR include necessary documentation updates?

yes, it to be updated for CRSTransform .

[jiayuasu]

This looks good to me.

[jiayuasu]

@scially I am not sure whether we should take into account datum shift. Currently, the SQL interface also just disable the exception.