Add ClasspathURLProvider implementation that reads system properties

[linghengqian]

For #29052.

Changes proposed in this pull request:

• Add ClasspathURLProvider implementation that reads system properties. For nativeTest, we need a way to dynamically define properties in a YAML file. To cover the JDBC Driver scenario, I don't think the lower level Java API should be used in nativeTest.
• This PR simultaneously modifies some nativeTest, especially to further prevent the problem discovered by Add GraalVM Reachability Metadata and corresponding nativeTest for Etcd integration #29755 that the ports involved in MySQL's nativeTest are occupied by unknown applications.

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