[HUDI-1197] Fix import issue that fails scala 2.12 build (#1976)

diff --git a/hudi-spark/src/main/scala/org/apache/hudi/HoodieWriterUtils.scala b/hudi-spark/src/main/scala/org/apache/hudi/HoodieWriterUtils.scala
index 484605c..294050b 100644
--- a/hudi-spark/src/main/scala/org/apache/hudi/HoodieWriterUtils.scala
+++ b/hudi-spark/src/main/scala/org/apache/hudi/HoodieWriterUtils.scala
@@ -20,8 +20,8 @@
 import org.apache.hudi.DataSourceWriteOptions._
 import org.apache.hudi.common.config.TypedProperties
 
-import scala.collection.JavaConversions._
-import scala.collection.JavaConverters._
+import scala.collection.JavaConversions.mapAsJavaMap
+import scala.collection.JavaConverters.mapAsScalaMapConverter
 
 /**
  * WriterUtils to assist in write path in Datasource and tests.