[Test] Avoid use the same token name in different tests (elastic#74280)

The name token1 is used in both testGetServiceAccountCredentials and
testCreateServiceAccountToken. There are times when the two tests are not fully
isolated. This leads to test failure because indexing of the service token
document must be an op_create. This PR fixes the failure by using a different
token name in testGetServiceAccountCredentials.

Author: ywangd

client/rest-high-level/src/test/java/org/elasticsearch/client/documentation/SecurityDocumentationIT.java

@@ -2611,7 +2611,6 @@ public void onFailure(Exception e) {
         }
     }
 
-    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/74278")
     public void testCreateServiceAccountToken() throws IOException {
         RestHighLevelClient client = highLevelClient();
         {
@@ -2720,14 +2719,13 @@ public void onFailure(Exception e) {
         }
     }
 
-    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/74278")
     public void testGetServiceAccountCredentials() throws IOException {
         RestHighLevelClient client = highLevelClient();
         final CreateServiceAccountTokenRequest createServiceAccountTokenRequest =
-            new CreateServiceAccountTokenRequest("elastic", "fleet-server", "token1");
+            new CreateServiceAccountTokenRequest("elastic", "fleet-server", "token2");
         final CreateServiceAccountTokenResponse createServiceAccountTokenResponse =
             client.security().createServiceAccountToken(createServiceAccountTokenRequest, RequestOptions.DEFAULT);
-        assertThat(createServiceAccountTokenResponse.getName(), equalTo("token1"));
+        assertThat(createServiceAccountTokenResponse.getName(), equalTo("token2"));
 
         {
             // tag::get-service-account-credentials-request
@@ -2749,7 +2747,7 @@ public void testGetServiceAccountCredentials() throws IOException {
             // end::get-service-account-credentials-response
             assertThat(principal, equalTo("elastic/fleet-server"));
             assertThat(serviceTokenInfos.size(), equalTo(1));
-            assertThat(tokenName, equalTo("token1"));
+            assertThat(tokenName, equalTo("token2"));
             assertThat(tokenSource, equalTo("index"));
         }
 
@@ -2783,7 +2781,7 @@ public void onFailure(Exception e) {
             assertNotNull(future.actionGet());
             assertThat(future.actionGet().getPrincipal(), equalTo("elastic/fleet-server"));
             assertThat(future.actionGet().getServiceTokenInfos().size(), equalTo(1));
-            assertThat(future.actionGet().getServiceTokenInfos().get(0), equalTo(new ServiceTokenInfo("token1", "index")));
+            assertThat(future.actionGet().getServiceTokenInfos().get(0), equalTo(new ServiceTokenInfo("token2", "index")));
         }
     }