Merged PR 215: Fix Chroma Warmup

Fix Chroma Warmup

src/main/java/com/olympus/hermione/config/ChromaWarmupService.java

@@ -56,7 +56,7 @@ public class ChromaWarmupService {
     }
     
     private void performWarmup() {
-        String healthUrl = chromaHost + ":" + chromaPort + "/api/v1/heartbeat";
+        String healthUrl = chromaHost + ":" + chromaPort + "/api/v2/heartbeat";
         
         try {
             long startTime = System.currentTimeMillis();