Fix TimeSeriesLifecycleActionsIT.testAllocateOnlyAllocation (#69563)

This loosens the restriction on the node(s) that are allowed, and gives the test more time for the
shard to move to the expected node and then into the phase complete step.

Resolves #69340

x-pack/plugin/ilm/qa/multi-node/src/javaRestTest/java/org/elasticsearch/xpack/ilm/TimeSeriesLifecycleActionsIT.java

@@ -163,16 +163,16 @@ public class TimeSeriesLifecycleActionsIT extends ESRestTestCase {
     }
 
 
-    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/69340")
     public void testAllocateOnlyAllocation() throws Exception {
         createIndexWithSettings(client(), index, alias, Settings.builder().put(IndexMetadata.SETTING_NUMBER_OF_SHARDS, 2)
             .put(IndexMetadata.SETTING_NUMBER_OF_REPLICAS, 0));
-        String allocateNodeName = "javaRestTest-" + randomFrom(0, 1);
-        AllocateAction allocateAction = new AllocateAction(null, null, null, singletonMap("_name", allocateNodeName));
+        String allocateNodeName = "javaRestTest-0,javaRestTest-1,javaRestTest-2,javaRestTest-3";
+        AllocateAction allocateAction = new AllocateAction(null, singletonMap("_name", allocateNodeName), null, null);
         String endPhase = randomFrom("warm", "cold");
         createNewSingletonPolicy(client(), policy, endPhase, allocateAction);
         updatePolicy(client(), index, policy);
-        assertBusy(() -> assertThat(getStepKeyForIndex(client(), index), equalTo(PhaseCompleteStep.finalStep(endPhase).getKey())));
+        assertBusy(() -> assertThat(getStepKeyForIndex(client(), index), equalTo(PhaseCompleteStep.finalStep(endPhase).getKey())),
+            30, TimeUnit.SECONDS);
         ensureGreen(index);
     }