
This change allows for providing the metric name list to the modify_query method, which can greatly increase performence when calling the method in a loop. Old behavior with sending a Prometheus API request is preserved when the new parameter isn't used. Change-Id: I151c150c47e39699889baa1564a974e163c6a944 Signed-off-by: Jaromir Wysoglad <jwysogla@redhat.com>