[SPARK-8567] [SQL] Debugging flaky HiveSparkSubmitSuite

Using similar approach used in `HiveThriftServer2Suite` to print stdout/stderr of the spawned process instead of logging them to see what happens on Jenkins. (This test suite only fails on Jenkins and doesn't spill out any log...)

cc yhuai

Author: Cheng Lian <lian@databricks.com>

Closes #6978 from liancheng/debug-hive-spark-submit-suite and squashes the following commits:

b031647 [Cheng Lian] Prints process stdout/stderr instead of logging them

sql/hive/src/test/scala/org/apache/spark/sql/hive/HiveSparkSubmitSuite.scala

@@ -19,6 +19,8 @@ package org.apache.spark.sql.hive
 
 import java.io.File
 
+import scala.sys.process.{ProcessLogger, Process}
+
 import org.apache.spark._
 import org.apache.spark.sql.hive.test.{TestHive, TestHiveContext}
 import org.apache.spark.util.{ResetSystemProperties, Utils}
@@ -82,12 +84,18 @@ class HiveSparkSubmitSuite
   // This is copied from org.apache.spark.deploy.SparkSubmitSuite
   private def runSparkSubmit(args: Seq[String]): Unit = {
     val sparkHome = sys.props.getOrElse("spark.test.home", fail("spark.test.home is not set!"))
-    val process = Utils.executeCommand(
+    val process = Process(
       Seq("./bin/spark-submit") ++ args,
       new File(sparkHome),
-      Map("SPARK_TESTING" -> "1", "SPARK_HOME" -> sparkHome))
+      "SPARK_TESTING" -> "1",
+      "SPARK_HOME" -> sparkHome
+    ).run(ProcessLogger(
+      (line: String) => { println(s"out> $line") },
+      (line: String) => { println(s"err> $line") }
+    ))
+
     try {
-      val exitCode = failAfter(120 seconds) { process.waitFor() }
+      val exitCode = failAfter(120 seconds) { process.exitValue() }
       if (exitCode != 0) {
         fail(s"Process returned with exit code $exitCode. See the log4j logs for more detail.")
       }