Shardingsphere: Use YAML configuration instead of java configuration for DataSource test

[terrymanu]

YAML configuration is clear and easy to understand.
Using YAML configuration to instead of java configuration for DataSource test is better.
The test cases need to be refactored:

• [x] AbstractEncryptJDBCDatabaseAndTableTest for encrypt rule creation
• [x] AbstractMasterSlaveJDBCDatabaseAndTableTest for master slave rule creation
• [x] AbstractShardingJDBCDatabaseAndTableTest for sahrding rule creation

[HetaoWang]

I want to do it

[terrymanu]

@HetaoWang Welcome on board.

[ranjeet-floyd]

@terrymanu Can i take this ?. Thanks

[terrymanu]

@ranjeet-floyd there are 3 sub-tasks, you may take the last one if you interest.

[ranjeet-floyd]

@terrymanu ok i will take AbstractShardingJDBCDatabaseAndTableTest for sahrding rule creation Thanks

[ranjeet-floyd]

@terrymanu Raised PR for AbstractEncryptJDBCDatabaseAndTableTest. https://github.com/apache/incubator-shardingsphere/pull/4871

Please let me if this is right way , then will do others.