GSI: get active nodes

Change-Id: I73557eccb2e9b2169ce7b7b5022d16e2d79a57a2
Reviewed-on: https://review.couchbase.org/c/perfrunner/+/170675
Tested-by: Build Bot <[email protected]>
Reviewed-by: vikas chaudhary <[email protected]>

Author: vikas-getconnect

perfrunner/tests/secondary.py

@@ -1209,7 +1209,7 @@ def run(self):
 
         self.report_kpi(time_elapsed, "Create")
 
-        for server in self.cluster_spec.servers_by_role('index'):
+        for server in self.rest.get_active_nodes_by_role(self.master_node, 'index'):
             logger.info("{} : {} Indexes".format(server,
                                                  self.rest.indexes_instances_per_node(server)))