Use JavaConverters

Author: yoshinorin

src/main/scala/gitbucket/monitoring/services/EnvironmentVariable.scala

@@ -1,10 +1,10 @@
 package gitbucket.monitoring.services
 
-import scala.collection.JavaConversions._
+import scala.collection.JavaConverters._
 import gitbucket.monitoring.utils.Message
 
 object EnvironmentVariable {
   def valiables: Map[String, String] = {
-    System.getenv().toMap
+    System.getenv().asScala.toMap
   }
 }