[SPARK-9613] [HOTFIX] Fix usage of JavaConverters removed in Scala 2.11

Fix for [JavaConverters.asJavaListConverter](http://www.scala-lang.org/api/2.10.5/index.html#scala.collection.JavaConverters$) being removed in 2.11.7 and hence the build fails with the 2.11 profile enabled. Tested with the default 2.10 and 2.11 profiles. BUILD SUCCESS in both cases.

Build for 2.10:

    ./build/mvn -Pyarn -Phadoop-2.6 -Dhadoop.version=2.7.1 -DskipTests clean install

and 2.11:

    ./dev/change-scala-version.sh 2.11
    ./build/mvn -Pyarn -Phadoop-2.6 -Dhadoop.version=2.7.1 -Dscala-2.11 -DskipTests clean install

Author: Jacek Laskowski <jacek@japila.pl>

Closes #8479 from jaceklaskowski/SPARK-9613-hotfix.

mllib/src/test/java/org/apache/spark/ml/classification/JavaOneVsRestSuite.java

@@ -55,7 +55,7 @@ public void setUp() {
 
         double[] xMean = {5.843, 3.057, 3.758, 1.199};
         double[] xVariance = {0.6856, 0.1899, 3.116, 0.581};
-        List<LabeledPoint> points = JavaConverters.asJavaListConverter(
+        List<LabeledPoint> points = JavaConverters.seqAsJavaListConverter(
             generateMultinomialLogisticInput(weights, xMean, xVariance, true, nPoints, 42)
         ).asJava();
         datasetRDD = jsc.parallelize(points, 2);