Support TEST_IMAGES_REQUIRED and DEBUG_IMAGES_REQUIRED for all URL

[llxia]

TEST_IMAGES_REQUIRED and DEBUG_IMAGES_REQUIRED are only enabled for if users provide one URL and filename contains OpenJ9-JDK. If URL contains OpenJ9-JDK, the test script will auto download test image and debug image based on the TEST_IMAGES_REQUIRED and DEBUG_IMAGES_REQUIRED flags. I think we should enhance the feature and add support for all URL.

https://github.com/adoptium/aqa-tests/blob/f59dc40ed9526e9e8b73f3aa089f80bd6284736f/get.sh#L201