addressed PR comments

Author: ShourieG

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/security/authz/store/KibanaOwnedReservedRoleDescriptors.java

@@ -536,7 +536,6 @@ static RoleDescriptor kibanaSystem(String name) {
                         // Require "delete_index" to perform ILM policy actions
                         TransportDeleteIndexAction.TYPE.name(),
                         TransportIndicesAliasesAction.NAME,
-                        TransportUpdateSettingsAction.TYPE.name(),
                         TransportAutoPutMappingAction.TYPE.name()
                     )
                     .build(),

x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/security/authz/store/ReservedRolesStoreTests.java

@@ -1902,7 +1902,7 @@ public void testKibanaSystemRole() {
             assertThat(kibanaRole.indices().allowedIndicesMatcher(TransportIndexAction.NAME).test(indexAbstraction), is(true));
             assertThat(kibanaRole.indices().allowedIndicesMatcher(TransportDeleteAction.NAME).test(indexAbstraction), is(true));
             // The "update" action is also implicitly part of "write"
-            assertThat(kibanaRole.indices().allowedIndicesMatcher(UpdateAction.NAME).test(indexAbstraction), is(true));
+            assertThat(kibanaRole.indices().allowedIndicesMatcher(TransportUpdateAction.NAME).test(indexAbstraction), is(true));
 
             // Assert Index Management Actions (Allowed by "create_index", "delete_index", and "manage")
             // Allowed by the explicit "create_index" privilege
@@ -1916,12 +1916,6 @@ public void testKibanaSystemRole() {
                 is(true)
             );
 
-            // Assert ILM Actions (Allowed by "manage" and explicit transport actions)
-            // Allowed due to the "manage" privilege and explicit TransportUpdateSettingsAction
-            assertThat(
-                kibanaRole.indices().allowedIndicesMatcher(TransportUpdateSettingsAction.TYPE.name()).test(indexAbstraction),
-                is(true)
-            );
             // Allowed due to the "manage" privilege and explicit TransportAutoPutMappingAction
             assertThat(
                 kibanaRole.indices().allowedIndicesMatcher(TransportPutMappingAction.TYPE.name()).test(indexAbstraction),