Merge pull request #516 from sarutak/master

modified SparkPluginBuild.scala to use https protocol for accessing gith...

We cannot build Spark behind a proxy although we execute sbt with -Dhttp(s).proxyHost -Dhttp(s).proxyPort -Dhttp(s).proxyUser -Dhttp(s).proxyPassword options.
It's because of using git protocol to clone junit_xml_listener.git.
I could build after modifying SparkPluginBuild.scala.

I reported this issue to JIRA.
https://spark-project.atlassian.net/browse/SPARK-1046

project/project/SparkPluginBuild.scala

@@ -20,5 +20,5 @@ import sbt._
 object SparkPluginDef extends Build {
   lazy val root = Project("plugins", file(".")) dependsOn(junitXmlListener)
   /* This is not published in a Maven repository, so we get it from GitHub directly */
-  lazy val junitXmlListener = uri("git://github.com/ijuma/junit_xml_listener.git#fe434773255b451a38e8d889536ebc260f4225ce")
+  lazy val junitXmlListener = uri("https://github.com/ijuma/junit_xml_listener.git#fe434773255b451a38e8d889536ebc260f4225ce")
 }