B #3280: Revert original cluster create semantics

(cherry picked from commit ddb2d892c2)

src/sunstone/models/OpenNebulaJSON/ClusterJSON.rb

@@ -26,18 +26,7 @@ module OpenNebulaJSON
                 return cluster_hash
             end
 
-            # Check if cluster exists
-            cluster_pool = OpenNebula::ClusterPool.new(@client)
-            cluster_pool.info
-            cluster_pool.each do |cluster|
-                if cluster.name == cluster_hash['name']
-                    # Use existing cluster
-                    @pe_id = cluster.id
-                else
-                    # Create cluster
-                   self.allocate(cluster_hash['name'])
-                end
-            end
+            self.allocate(cluster_hash['name'])
         end
 
         def perform_action(template_json)