Revert git repo change.

Author: rxin

ec2/spark_ec2.py

@@ -571,7 +571,7 @@ def setup_cluster(conn, master_nodes, slave_nodes, opts, deploy_ssh_key):
 
     # NOTE: We should clone the repository before running deploy_files to
     # prevent ec2-variables.sh from being overwritten
-    ssh(master, opts, "rm -rf spark-ec2 && git clone https://github.com/rxin/spark-ec2.git -b v3-ebs")
+    ssh(master, opts, "rm -rf spark-ec2 && git clone https://github.com/mesos/spark-ec2.git -b v3")
 
     print "Deploying files to master..."
     deploy_files(conn, "deploy.generic", opts, master_nodes, slave_nodes, modules)