Mintmaker redis memory usage added (#7484)

jira: CWFHEALTH-4347

Author: HozifaWasfy

components/monitoring/prometheus/base/monitoringstack/monitoringstack.yaml

@@ -168,6 +168,7 @@ spec:
         - '{__name__="kube_deployment_spec_replicas", namespace="mintmaker"}'
         - '{__name__="cluster_ram_requested_perc"}'
         - '{__name__="node_memory_pressured_perc"}'
+        - '{__name__="redis_node_memory_usage_perc"}'
 
         # Namespace (expression):  ~".*monitoring.*"
         - '{__name__="kube_deployment_status_replicas_ready", namespace=~".*monitoring.*"}'