Include the sbin/spark-config.sh in spark-executor

This is needed because broadcast values are broken on pyspark on Mesos,
it tries to import pyspark but can't.

Author: bouk

sbin/spark-executor

@@ -19,5 +19,10 @@
 
 FWDIR="$(cd `dirname $0`/..; pwd)"
 
+sbin=`dirname "$0"`
+sbin=`cd "$sbin"; pwd`
+
+. "$sbin/spark-config.sh"
+
 echo "Running spark-executor with framework dir = $FWDIR"
 exec $FWDIR/bin/spark-class org.apache.spark.executor.MesosExecutorBackend