Testcontainers: Add Oracle JDBC test

[ostinru]

Add Oracle JDBC tests

Add new tests to cover Cloudberry -> PXF -> JDBC path. In this test we are verifying that main data Cloudberry and Oracle types can be converted back and forth.

Test covers Oracle 23 (only supported by Testcontainers version).

[Copilot]

Pull request overview

Note

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Adds Oracle 23 Testcontainers-based JDBC integration tests to validate Cloudberry → PXF → JDBC type round-tripping, and updates docs/dependencies to support Oracle connectivity.

Changes:

• Add Oracle JDBC driver dependencies for PXF and automation tests.
• Introduce an OracleContainer wrapper and new TestNG test exercising read/write of common types.
• Update Oracle JDBC PXF documentation to reference Apache Cloudberry and add FDW-based examples.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 9 comments.

Show a summary per file

File	Description
server/pxf-jdbc-drivers/build.gradle	Adds Oracle JDBC-related dependencies to the PXF JDBC drivers module.
docs/content/jdbc_pxf_oracle.html.md.erb	Updates Oracle JDBC setup docs for Cloudberry and adds FDW usage examples.
automation/src/test/java/org/apache/cloudberry/pxf/automation/features/jdbc/JdbcOracleTest.java	Adds Testcontainers-based Oracle JDBC read/write type coverage.
automation/src/main/java/org/apache/cloudberry/pxf/automation/testcontainers/OracleContainer.java	Introduces an Oracle Free container wrapper and JDBC URL helpers.
automation/sqlrepo/features/jdbc/oracle/**	Adds SQL + expected results for read/write regression tests.
automation/pom.xml	Adds Oracle JDBC and Oracle-Free Testcontainers dependencies for automation.

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