Forbid use of ClassLoader APIs for disabling assertions (opensearch-project#20000)

Programmatically disabling assertions in tests will disable assertions
for all classes loaded in that JVM instance. This will cause suprious
test failures in random tests depending on where and when they get
executed.

Signed-off-by: Andrew Ross <andrross@amazon.com>

Author: andrross

buildSrc/src/main/resources/forbidden/opensearch-test-signatures.txt

@@ -26,3 +26,8 @@ com.carrotsearch.randomizedtesting.annotations.Nightly @ We don't run nightly te
 org.junit.Test @defaultMessage Just name your test method testFooBar
 
 java.lang.Math#random() @ Use one of the various randomization methods from LuceneTestCase or OpenSearchTestCase for reproducibility
+
+@defaultMessage Disabling assertions is a JVM-wide setting and will break other tests
+java.lang.ClassLoader#setDefaultAssertionStatus(boolean)
+java.lang.ClassLoader#setPackageAssertionStatus(java.lang.String, boolean)
+java.lang.ClassLoader#setClassAssertionStatus(java.lang.String, boolean)