Align end to end test with current metrics (llm-d#1841)

Signed-off-by: Shmuel Kallner <kallner@il.ibm.com>

Author: shmuelk

test/e2e/requests_test.go

@@ -328,15 +328,15 @@ func verifyMetrics(infPoolName string, numTargetPorts int) {
 		"llm_d_epp_request_total",
 		"llm_d_epp_request_error_total",
 		"llm_d_epp_request_duration_seconds",
-		"llm_d_epp_normalized_time_per_output_token_seconds",
-		"llm_d_epp_request_sizes",
-		"llm_d_epp_response_sizes",
-		"llm_d_epp_input_tokens",
-		"llm_d_epp_output_tokens",
+		"llm_d_epp_request_ntpot_seconds",
+		"llm_d_epp_request_size_bytes",
+		"llm_d_epp_response_size_bytes",
+		"llm_d_epp_request_input_tokens",
+		"llm_d_epp_request_output_tokens",
 		"llm_d_epp_average_kv_cache_utilization",
 		"llm_d_epp_average_queue_size",
 		"llm_d_epp_per_endpoint_queue_size",
-		"llm_d_epp_running_requests",
+		"llm_d_epp_request_running",
 		"llm_d_epp_ready_endpoints",
 		"llm_d_epp_info",
 	}