[1.x] Add support to generate code coverage report with JaCoCo

[tlfeng]

Description

Backport #971 and #1214 to 1.x branch

• Apply JaCoCo Gradle plugin to the root project, and to all the sub-projects through BuildPlugin.
• Add 3 Gradle tasks: codeCoverageReport, codeCoverageReportForUnitTest, codeCoverageReportForIntegrationTest to generate code coverage report for all the tests, unit tests, and integration tests correspondingly.
• Attach Gradle codeCoverageReport task to check task.
• Remove outdated code of giving JaCoCo files permission when Java security manager enabled

Usage of the new Gradle tasks:

• Generate code coverage report after check task: run ./gradlew check -Dtests.coverage=true
• Generate code coverage report
  for all the test: ./gradlew codeCoverageReport,
  for unit tests only: ./gradlew codeCoverageReportForUnitTest,
  for integration tests only: ./gradlew codeCoverageReportForIntegrationTest
• The report will be in XML format only by default,
  to generate report in HTML format, add parameter -Dtests.coverage.report.html=true, for example ./gradlew codeCoverageReport -Dtests.coverage.report.html=true,
  to generate report in CSV format, add parameter -Dtests.coverage.report.csv=true,
  not generate report in XML format, add parameter -Dtests.coverage.report.xml=false,

Issues Resolved

#850

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[opensearch-ci-bot]

✅   Gradle Wrapper Validation success dbc23db

[opensearch-ci-bot]

✅   DCO Check Passed dbc23db

[opensearch-ci-bot]

✅   Gradle Precommit success dbc23db

[tlfeng]

start gradle check

[opensearch-ci-bot]

✅   Gradle Check success dbc23db
Log 522

Reports 522

[saratvemulapalli]

Thanks @tlfeng for the change!

[tlfeng]

Thanks @tlfeng for the change!

Thanks for your review of this PR and the previous one! 👍