Percona Toolkit fix

Actual Result:
The Percona Toolkit test for stats is not passing. The Query property is unmarshalled into bson.D instead of bson.M. Additionally, some structures and BSON tags are not consistently aligned, which can lead to incorrect or null data being unmarshalled.

Expected Result:
All tests should pass without being skipped. BSON tags should match the test data examples. Additionally, we should implement the ability to automatically generate test data when a specific environment variable is provided. Check for another inconsistencies.

Suggested Implementation:

1. Verify locks properties in the SystemProfile struct:
   The BSON tag for R is inconsistent ("r" in some cases, "R" in others). Standardize the tag or adjust the test data accordingly.

2. Fix the TestStats and related tests:
   The Query property in the test data is likely bson.M, while the target type is bson.D. Adjust the test data or modify the unmarshalling logic.

3. Implement automatic test data regeneration:
   Introduce an environment variable that, when set, regenerates the expected test data dynamically.

This should ensure more reliable and maintainable tests.