fix scala?

Author: sadwitdastreetz

hugegraph-spark-connector/src/test/scala/org/apache/hugegraph/spark/connector/SinkExampleTest.scala

@@ -106,6 +106,8 @@ class SinkExampleTest {
       .option("host", DEFAULT_HOST)
       .option("port", DEFAULT_PORT)
       .option("graph", DEFAULT_GRAPH)
+      .option("username", "admin")
+      .option("password", "pa")
       .option("data-type", "vertex")
       .option("label", "software")
       .option("ignored-fields", "ISBN")
@@ -137,6 +139,8 @@ class SinkExampleTest {
       .option("host", DEFAULT_HOST)
       .option("port", DEFAULT_PORT)
       .option("graph", DEFAULT_GRAPH)
+      .option("username", "admin")
+      .option("password", "pa")
       .option("data-type", "edge")
       .option("label", "knows")
       .option("source-name", "source")
@@ -165,6 +169,8 @@ class SinkExampleTest {
       .option("host", DEFAULT_HOST)
       .option("port", DEFAULT_PORT)
       .option("graph", DEFAULT_GRAPH)
+      .option("username", "admin")
+      .option("password", "pa")
       .option("data-type", "edge")
       .option("label", "created")
       .option("source-name", "source") // customize