Added init method call for filter, still cannot replicate #71 in local

Author: sapessi

aws-serverless-java-container-spark/src/main/java/com/amazonaws/serverless/proxy/spark/embeddedserver/LambdaEmbeddedServer.java

@@ -56,6 +56,7 @@ public int ignite(String s, int i, SslStores sslStores, int i1, int i2, int i3)
         if (sparkFilter == null) {
             sparkFilter = new MatcherFilter(applicationRoutes, staticFilesConfiguration, true, hasMultipleHandler);
         }
+        sparkFilter.init(null);
 
         return i;
     }