HOTFIX: Clean up build in network module.

This is currently breaking the package build for some people (including me).

This patch does some general clean-up which also fixes the current issue.
- Uses consistent artifact naming
- Adds sbt support for this module
- Changes tests to use scalatest (fixes the original issue[1])

One thing to note, it turns out that scalatest when invoked in the
Maven build doesn't succesfully detect JUnit Java tests. This is
a long standing issue, I noticed it applies to all of our current
test suites as well. I've created SPARK-4159 to fix this.

[1] The original issue is that we need to allocate extra memory
for the tests, happens by default in our scalatest configuration.

Author: Patrick Wendell <pwendell@gmail.com>

Closes #3025 from pwendell/hotfix and squashes the following commits:

faa9053 [Patrick Wendell] HOTFIX: Clean up build in network module.

1 files changed, 5 insertions, 3 deletions

diff --git a/project/SparkBuild.scala b/project/SparkBuild.scala
index 6d5eb681c6..77083518bb 100644
--- a/project/SparkBuild.scala
+++ b/project/SparkBuild.scala
@@ -31,10 +31,10 @@ object BuildCommons {
   private val buildLocation = file(".").getAbsoluteFile.getParentFile
 
   val allProjects@Seq(bagel, catalyst, core, graphx, hive, hiveThriftServer, mllib, repl,
-  sql, streaming, streamingFlumeSink, streamingFlume, streamingKafka, streamingMqtt,
+  sql, networkCommon, streaming, streamingFlumeSink, streamingFlume, streamingKafka, streamingMqtt,
   streamingTwitter, streamingZeromq) =
     Seq("bagel", "catalyst", "core", "graphx", "hive", "hive-thriftserver", "mllib", "repl",
-      "sql", "streaming", "streaming-flume-sink", "streaming-flume", "streaming-kafka",
+      "sql", "network-common", "streaming", "streaming-flume-sink", "streaming-flume", "streaming-kafka",
       "streaming-mqtt", "streaming-twitter", "streaming-zeromq").map(ProjectRef(buildLocation, _))
 
   val optionallyEnabledProjects@Seq(yarn, yarnStable, yarnAlpha, java8Tests, sparkGangliaLgpl, sparkKinesisAsl) =
@@ -142,7 +142,9 @@ object SparkBuild extends PomBuild {
 
   // TODO: Add Sql to mima checks
   allProjects.filterNot(x => Seq(spark, sql, hive, hiveThriftServer, catalyst, repl,
-    streamingFlumeSink).contains(x)).foreach(x => enable(MimaBuild.mimaSettings(sparkHome, x))(x))
+    streamingFlumeSink, networkCommon).contains(x)).foreach {
+      x => enable(MimaBuild.mimaSettings(sparkHome, x))(x)
+    }
 
   /* Enable Assembly for all assembly projects */
   assemblyProjects.foreach(enable(Assembly.settings))