Ensure Java imports are grouped and ordered by package.

Author: tellison

core/src/main/scala/org/apache/spark/SSLOptions.scala

@@ -19,7 +19,6 @@ package org.apache.spark
 
 import java.io.{File, FileInputStream}
 import java.security.{KeyStore, NoSuchAlgorithmException}
-
 import javax.net.ssl.{KeyManager, KeyManagerFactory, SSLContext, TrustManager, TrustManagerFactory}
 
 import com.typesafe.config.{Config, ConfigFactory, ConfigValueFactory}

core/src/test/scala/org/apache/spark/SSLOptionsSuite.scala

@@ -18,11 +18,11 @@
 package org.apache.spark
 
 import java.io.File
+import javax.net.ssl.SSLContext
 
 import com.google.common.io.Files
 import org.apache.spark.util.Utils
 import org.scalatest.BeforeAndAfterAll
-import javax.net.ssl.SSLContext
 
 class SSLOptionsSuite extends SparkFunSuite with BeforeAndAfterAll {