fixing security integ test

[dhrubo-os]

Description

[fixing security integ test]

Related Issues

Resolves #[Issue number to be closed when this PR is merged]

Check List

• New functionality includes testing.
• New functionality has been documented.
• API changes companion pull request created.
• Commits are signed per the DCO using --signoff.
• Public documentation issue/PR created.

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[mingshl]

it passed!!!! verifying it fix [BUG] SecureMLRestIT.testPredictWithReadOnlyMLAccess Failed

./gradlew integTest --tests "org.opensearch.ml.rest.SecureMLRestIT.testTrainWithReadOnlyMLAccess"  -Dtests.rest.cluster=localhost:9200 -Dtests.cluster=localhost:9200 -Dtests.clustername="opensearch" -Dhttps=true -Duser=admin -Dpassword=myStrongPassword123!
Starting a Gradle Daemon (subsequent builds will be faster)
=======================================
OpenSearch Build Hamster says Hello!
  Gradle Version        : 8.11.1
  OS Info               : Mac OS X 15.3.1 (x86_64)
  JDK Version           : 21 (Amazon Corretto JDK)
  JAVA_HOME             : /Users/mingshl/Library/Java/JavaVirtualMachines/corretto-21.0.4/Contents/Home
  Random Testing Seed   : 8F2A30648986F9DB
  In FIPS 140 mode      : false
=======================================

> Task :opensearch-ml-plugin:compileTestJava
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.

> Task :opensearch-ml-plugin:integTest

SecureMLRestIT STANDARD_ERROR
    Mar 13, 2025 10:11:32 AM org.apache.lucene.internal.vectorization.VectorizationProvider lookup
    WARNING: Java vector incubator module is not readable. For optimal vector performance, pass '--add-modules jdk.incubator.vector' to enable Vector API.

SecureMLRestIT > testTrainWithReadOnlyMLAccess STANDARD_OUT
    [2025-03-13T14:11:33,018][INFO ][o.o.m.r.SecureMLRestIT   ] [testTrainWithReadOnlyMLAccess] before test
    [2025-03-13T14:11:33,236][INFO ][o.o.m.r.SecureMLRestIT   ] [testTrainWithReadOnlyMLAccess] initializing REST clients against [https://localhost:9200]
    [2025-03-13T14:11:50,914][INFO ][o.o.m.r.SecureMLRestIT   ] [testTrainWithReadOnlyMLAccess] There are still tasks running after this test that might break subsequent tests [indices:data/write/bulk[s], indices:data/write/bulk[s][p], indices:data/write/index].
    [2025-03-13T14:11:50,976][INFO ][o.o.m.r.SecureMLRestIT   ] [testTrainWithReadOnlyMLAccess] after test
[Incubating] Problems report is available at: file:///Users/mingshl/Documents/GitHub/mlcommons-repo/ml-commons/build/reports/problems/problems-report.html

Deprecated Gradle features were used in this build, making it incompatible with Gradle 9.0.

You can use '--warning-mode all' to show the individual deprecation warnings and determine if they come from your own scripts or plugins.

For more on this, please refer to https://docs.gradle.org/8.11.1/userguide/command_line_interface.html#sec:command_line_warnings in the Gradle documentation.

BUILD SUCCESSFUL in 2m 7s ```