Set postgresql image in integration tests

[randmonkey]

Is there an existing issue for this?

• I have searched the existing issues

Does this enhancement require public documentation?

• I have added an Acceptance Criteria item for adding and/or adjusting public documentation (if applicable)

Problem Statement

The bitnami/postgresql docker image is gone so the integration tests using postgres DB cannot run. We need to have a way to specify the postgresql image to use the image from other repos.

Proposed Solution

• Add a WithPostgresImageRepo in KTF's kong addon builder
• Set the postgresql image repo in the KIC integration tests

Additional information

No response

Acceptance Criteria

• KIC integration tests using postgres DB passes