Organize it module and use system properties for it/jdbc

[Polber]

The purpose of this PR is to reorganize the IT module and remove unused code.

A lot of the classes in the IT module have become disjoint from the Beam source as mentioned in https://github.com/apache/beam/issues/30206.

Many of the classes in our port of the it/ module are 1:1 duplicates. Those duplicates have been removed, and only files with repo-specific changes have been left behind.

Alongside removing unused code, this PR also reorganizes templates-specific it classes into appropriate locations. For example, the JDBCBaseIT class was under it/google-cloud-platform, when a more appropriate location is a separate it/jdbc folder. Same goes for moving load test classes under the new lt/ module rather than under it/.

Lastly, the JDBC drivers used for testing have been consolidated under the it/jdbc module rather than defining as test artifacts in all the individual template modules that use them. The JDBCBaseIT also will now use the versions defined in the it/jdbc/pom.xml file instead of hard-coding the values in the class. This will make maintaining these dependencies a cleaner experience.

---

If the goal, according to https://github.com/apache/beam/issues/30206, is to in fact move IT classes back to the DataflowTemplates repo, a next step would be to either

1. Merge the classes left behind by this change into Beam, to get a single source-of-truth, then merge the entire module back into Templates
2. Go ahead and move all the IT classes into DataflowTemplates from Beam and handle merge conflicts manually.

[codecov[bot]]

Codecov Report

:x: Patch coverage is 0% with 29 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 45.18%. Comparing base (8c035b9) to head (02cb09e). :warning: Report is 602 commits behind head on main.

Files with missing lines	Patch %	Lines
.../com/google/cloud/teleport/it/jdbc/JDBCBaseIT.java	0.00%	16 Missing :warning:
...main/java/org/apache/beam/it/gcp/LoadTestBase.java	0.00%	13 Missing :warning:

:x: Your patch status has failed because the patch coverage (0.00%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1923      +/-   ##
============================================
+ Coverage     44.80%   45.18%   +0.38%     
  Complexity     3563     3563              
============================================
  Files           832      801      -31     
  Lines         49479    48011    -1468     
  Branches       5196     5097      -99     
============================================
- Hits          22169    21695     -474     
+ Misses        25659    24692     -967     
+ Partials       1651     1624      -27     

Components	Coverage Δ
spanner-templates	65.55% <ø> (-0.01%)	:arrow_down:
spanner-import-export	63.80% <ø> (-0.03%)	:arrow_down:
spanner-live-forward-migration	74.86% <ø> (ø)
spanner-live-reverse-replication	75.55% <ø> (ø)
spanner-bulk-migration	84.20% <ø> (ø)

Files with missing lines	Coverage Δ
...va/com/google/cloud/teleport/TemplateTestBase.java	0.00% <ø> (ø)
...oud/teleport/it/jdbc/conditions/JDBCRowsCheck.java	0.00% <ø> (ø)
...main/java/org/apache/beam/it/gcp/LoadTestBase.java	0.00% <0.00%> (ø)
.../com/google/cloud/teleport/it/jdbc/JDBCBaseIT.java	0.00% <0.00%> (ø)

... and 4 files with indirect coverage changes

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[github-actions[bot]]

This pull request has been marked as stale due to 180 days of inactivity. It will be closed in 1 week if no further activity occurs. If you think that’s incorrect or this pull request requires a review, please simply write any comment. If closed, you can revive the PR at any time. Thank you for your contributions.

[github-actions[bot]]

This pull request has been marked as stale due to 180 days of inactivity. It will be closed in 1 week if no further activity occurs. If you think that’s incorrect or this pull request requires a review, please simply write any comment. If closed, you can revive the PR at any time. Thank you for your contributions.