Support multiple masters in create-demo-table
Support multiple masters in create-demo-table

Allow passing addresses of multiple masters to
create-demo-table using a comma separated list.

Change-Id: Ic1a822f7bd8a1addd5fdffe94e4aa40a0fd446a3
Reviewed-on: http://gerrit.sjc.cloudera.com:8080/4978
Reviewed-by: Adar Dembo <866ca730bfc7f544e3ebce604ceeba4879f23df0@cloudera.com>
Tested-by: jenkins

andrwng/kudu,cloudera/kudu,EvilMcJerkface/kudu,helifu/kudu,cloudera/kudu,helifu/kudu,cloudera/kudu,andrwng/kudu,andrwng/kudu,cloudera/kudu,helifu/kudu,cloudera/kudu,andrwng/kudu,EvilMcJerkface/kudu,andrwng/kudu,InspurUSA/kudu,andrwng/kudu,EvilMcJerkface/kudu,cloudera/kudu,InspurUSA/kudu,InspurUSA/kudu,helifu/kudu,InspurUSA/kudu,EvilMcJerkface/kudu,EvilMcJerkface/kudu,EvilMcJerkface/kudu,InspurUSA/kudu,helifu/kudu,EvilMcJerkface/kudu,cloudera/kudu,EvilMcJerkface/kudu,InspurUSA/kudu,InspurUSA/kudu,cloudera/kudu,andrwng/kudu,helifu/kudu,cloudera/kudu,andrwng/kudu,InspurUSA/kudu,helifu/kudu,andrwng/kudu,InspurUSA/kudu,helifu/kudu,EvilMcJerkface/kudu,helifu/kudu