Add information about enabling integration tests

[AnastasiiaSergienko]

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[AnastasiiaSergienko]

Executing Disabled Integration Tests

Some integration tests are not running automatically, but it is possible to execute them locally.
The reason for the tests being disabled is we can only deliver drivers where the license allows redistribution.
Therefore we cannot include some jdbc drivers to the projects and you need to download them manually for local integration testing.

List of disabled integration tests:

• HiveSqlDialectIT

Starting Disabled Integration Test Locally

1. Download the Hive JDBC driver HiveJDBC41.jar

2. Temporarily put the driver into src/test/resources/integration/driver/hive directory.

3. If the files' names are different (you renamed the file, or it has a different version number, for example) from the mentioned above, edit src/test/resources/integration/driver/hive/hive.properties and settings.cfg files.

4. Run the tests from an IDE or temporarily add the integration test name into the maven-failsafe-plugin's includes a section and execute mvn verify command.

5. Remove the driver after the test and do not upload it to the GitHub repository.