test(bigquery-jdbc): add e2e otel test and code refinements#13226

keshavdandeva merged 15 commits into

jdbc/feature-branch-otelgoogleapis/google-cloud-java:jdbc/feature-branch-otelfrom

jdbc/e2e-test-otelgoogleapis/google-cloud-java:jdbc/e2e-test-otelCopy head branch name to clipboard