Return reasonable values from java.sql.DatabaseMetaData API methods.

[theshoeshiner]

Overview

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External contributors - please answer these questions before submitting a pull request. Thanks!

Please answer these questions before submitting your pull requests. Thanks!

1. What GitHub issue is this PR adressing? Make sure that there is an accompanying issue to your PR.

   Fixes #1087

2. Fill out the following pre-review checklist:

   • [ ] I am adding a new automated test(s) to verify correctness of my new code
   • [ ] I am adding new logging messages
   • [ ] I am modyfying authorization mechanisms
   • [ ] I am adding new credentials
   • [ ] I am modyfying OCSP code
   • [ ] I am adding a new dependency

3. Please describe how your code solves the related issue.

Reasonable values should be returned from these API methods so that downstream code can pull driver feature information without having to handle exceptions.

Pre-review checklist

• [ ] This change has passed precommit
• [ ] I have reviewed code coverage report for my PR in (Sonarqube)