Add reflection dependency

[heemin32]

Description

Add reflection dependency

Issues Resolved

Build is failing due to missing dependency. ml-common excluded reflection from runtime dependency.
opensearch-project/ml-commons@464bfe3

Check List

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

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[martin-gaievski]

Did you check that after this change tests are ok? I've been checking in 2.x, for me it kept failing on document upload unless I added two more dependencies:

    common_utils_version = System.getProperty("common_utils.version", opensearch_build)
    ...
    implementation group: 'org.javassist', name: 'javassist', version: '3.29.2-GA'
    implementation group: 'org.opensearch', name: 'common-utils', version: "${common_utils_version}"

[martin-gaievski]

Did you check that after this change tests are ok? I've been checking in 2.x, for me it kept failing on document upload unless I added two more dependencies:

    common_utils_version = System.getProperty("common_utils.version", opensearch_build)
    ...
    implementation group: 'org.javassist', name: 'javassist', version: '3.29.2-GA'
    implementation group: 'org.opensearch', name: 'common-utils', version: "${common_utils_version}"

Ok, I see it's failing for you as well: https://github.com/opensearch-project/neural-search/actions/runs/4420785422/jobs/7750894854. Please add those two dependencies from my previous comment, it should solve it