[hive][spark] Support creating external table without schema when the table already exists

[Zouxxyy]

Purpose

• When the table already exists, we do not need to specify the schema when creating an external table (since it must be consistent with the old schema and can easily be written incorrectly).
• TBLPROPERTIES can be a subset of the existing props, and for cross-engine compatibility, we have omitted the comparison of owner.

CREATE TABLE t USING paimon LOCATION 'xxxx'

extra updates:

• not save provider to props when create table with spark

Deprecated modification - Support add new props when creating external tables, for example, when a table written in Flink is used to create an external table in Spark, in this case, new props such as {provider: paimon} need be added

Tests

API and Format

Documentation

[JingsongLi]

+1