Switch to standard OpenSearch gradle build (opensearch-project#1888)

* Switch to standard OpenSearch gradle build

* Rewrote build.gradle to follow OpenSearch plugin standards
  * Enabled license headers check on the repository
  * Did not enable several new repository checks
  * Added maven publishing for security
  * Removed excess forced dependency resolutions
  * Rebuilt projects dependencies, release plugin binary has the exact same dependencies and versions
  * Converted dependencies into runtime dependencies to avoid use during coding
  * Converted dependencies from project wide to test only dependencies
  * jackson-databind version comes from OpenSearch
  * Replaced handmade build manifest with git properties to automated version used by OpenSearch
* Added license headers to files that were missing them
* Checkstyle improvements
  * Disable checkstyle checks that are not errors
  * Moved checkstyle file into directory off of the project root
* Moved standard configuration directory
* Using default test running from OpenSearch
  * Switched to RandomizedTest as the base test class
  * Parameterized test runner cannot be used with RandomizedTest converted test functionality
  * Fixed tests resource issues, added new fields to make this consistent in the codebase
  * Fixed issue with leaky environment variable for security root directory, refactored usage
  * Removed unneeded setDefaultUncaughtExceptionHandler in tests
  * Fixed issues with deprecated internal reflection from Mockito
  * Disabled ThreadLeak detection as it is catching real issues that are mitigated by retries
* Initial pass on non-inclusive terminology, commented out exclusions
* Removed test dependency on scala
* Removed test dependency on legacy xmlsecurity library

Signed-off-by: Peter Nied <petern@amazon.com>

.github/workflows/ci.yml

@@ -117,14 +117,14 @@ jobs:
         echo ${{ env.SECURITY_PLUGIN_VERSION_ONLY_NUMBER }}
         echo ${{ env.TEST_QUALIFIER }}
 
-    - run: ./gradlew clean assemble && test -s ./build/opensearch-security-${{ env.SECURITY_PLUGIN_VERSION }}.jar
+    - run: ./gradlew clean assemble && test -s ./build/distributions/opensearch-security-${{ env.SECURITY_PLUGIN_VERSION }}.zip
 
-    - run: ./gradlew clean assemble -Dbuild.snapshot=false && test -s ./build/opensearch-security-${{ env.SECURITY_PLUGIN_VERSION_NO_SNAPSHOT }}.jar
+    - run: ./gradlew clean assemble -Dbuild.snapshot=false && test -s ./build/distributions/opensearch-security-${{ env.SECURITY_PLUGIN_VERSION_NO_SNAPSHOT }}.zip
 
-    - run: ./gradlew clean assemble -Dbuild.snapshot=false -Dbuild.version_qualifier=${{ env.TEST_QUALIFIER }} && test -s ./build/opensearch-security-${{ env.SECURITY_PLUGIN_VERSION_ONLY_NUMBER }}-${{ env.TEST_QUALIFIER }}.jar
+    - run: ./gradlew clean assemble -Dbuild.snapshot=false -Dbuild.version_qualifier=${{ env.TEST_QUALIFIER }} && test -s ./build/distributions/opensearch-security-${{ env.SECURITY_PLUGIN_VERSION_ONLY_NUMBER }}-${{ env.TEST_QUALIFIER }}.zip
 
-    - run: ./gradlew clean assemble -Dbuild.version_qualifier=${{ env.TEST_QUALIFIER }} && test -s ./build/opensearch-security-${{ env.SECURITY_PLUGIN_VERSION_ONLY_NUMBER }}-${{ env.TEST_QUALIFIER }}-SNAPSHOT.jar
+    - run: ./gradlew clean assemble -Dbuild.version_qualifier=${{ env.TEST_QUALIFIER }} && test -s ./build/distributions/opensearch-security-${{ env.SECURITY_PLUGIN_VERSION_ONLY_NUMBER }}-${{ env.TEST_QUALIFIER }}-SNAPSHOT.zip
 
     - name: List files in the build directory if there was an error
-      run: ls -al ./build/
+      run: ls -al ./build/distributions/
       if: failure()