Asserts the deprecation warning after adding to allow list in test

Signed-off-by: Robert Downs <[email protected]>

src/test/kotlin/org/opensearch/indexmanagement/indexstatemanagement/runner/ManagedIndexRunnerIT.kt

@@ -179,6 +179,8 @@ class ManagedIndexRunnerIT : IndexStateManagementRestTestCase() {
                 .filter { actionType -> actionType != ReadOnlyAction.name }
                 .joinToString(prefix = "[", postfix = "]") { string -> "\"$string\"" }
             updateClusterSetting(ManagedIndexSettings.ALLOW_LIST.key, allowedActions, escapeValue = false)
+            // Note that the setting is expected to throw a deprecation warning so we don't fail the test
+            assertSettingDeprecationsAndWarnings(arrayOf(ManagedIndexSettings.ALLOW_LIST.key))
         }
 
         // speed up to fifth execution that should try to set index to read only and fail because the action is not allowed