[Maintenance]Enable indices.breaker.total.use_real_memory setting for integTest cluster (#2395)

Enable indices.breaker.total.use_real_memory setting for integTest Cluster  vai build.gradle for catching heap CB in local integration testing.

Signed-off-by: Rajvaibhav Rahane <rrahane@amazon.com>

Author: Rajrahane

CHANGELOG.md

@@ -47,4 +47,5 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 * Added Lucene BWC tests (#2313)[https://github.com/opensearch-project/k-NN/pull/2313]
 * Upgrade jsonpath from 2.8.0 to 2.9.0[2325](https://github.com/opensearch-project/k-NN/pull/2325)
 * Bump Faiss commit from 1f42e81 to 0cbc2a8 to accelerate hamming distance calculation using _mm512_popcnt_epi64  intrinsic and also add avx512-fp16 instructions to boost performance [#2381](https://github.com/opensearch-project/k-NN/pull/2381)
+* Enabled indices.breaker.total.use_real_memory setting via build.gradle for integTest Cluster to catch heap CB in local ITs and github CI actions [#2395](https://github.com/opensearch-project/k-NN/pull/2395/) 
 ### Refactoring

build.gradle

@@ -167,6 +167,15 @@ ext {
         )
         cluster.setSecure(true)
     }
+    propertyKeys = [
+        breaker: [
+            useRealMemory: 'tests.opensearch.indices.breaker.total.use_real_memory'
+        ]
+    ]
+}
+
+def getBreakerSetting() {
+    return System.getProperty(propertyKeys.breaker.useRealMemory, 'true')
 }
 
 allprojects {
@@ -399,6 +408,7 @@ integTest {
     if (System.getProperty("test.debug") != null) {
         jvmArgs '-agentlib:jdwp=transport=dt_socket,server=n,suspend=y,address=8000'
     }
+    systemProperty propertyKeys.breaker.useRealMemory, getBreakerSetting()
 }
 
 testClusters.integTest {
@@ -428,6 +438,7 @@ testClusters.integTest {
         }
     }
     systemProperty("java.library.path", "$rootDir/jni/release")
+    systemProperty propertyKeys.breaker.useRealMemory, getBreakerSetting()
 }
 
 task integTestRemote(type: RestIntegTestTask) {