Backward compatability changes

changelogs/unreleased/knative-0-7.yml

 ---
 title: Knative version bump 0.6 -> 0.7
-merge_request:
+merge_request: 17367
 author: Chris Baumbauer
 type: changed

config/prometheus/common_metrics.yml

@@ -209,6 +209,6 @@ panel_groups:
     weight: 1
     metrics:
     - id: system_metrics_knative_function_invocation_count
-      query_range: 'ceil(rate(istio_requests_total{destination_service_namespace="%{kube_namespace}", destination_app=~"%{function_name}.*"}[1m])*60)'
+      query_range: 'sum(ceil(rate(istio_requests_total{destination_service_namespace="%{kube_namespace}", destination_app=~"%{function_name}.*"}[1m])*60))'
       label: invocations / minute
       unit: requests

db/post_migrate/20190819231552_update_knative_prometheus_query_for_invocation_count.rb

+# frozen_string_literal: true
+
+class UpdateKnativePrometheusQueryForInvocationCount < ActiveRecord::Migration[5.2]
+  DOWNTIME = false
+
+  def up
+    ::Gitlab::DatabaseImporters::CommonMetrics::Importer.new.execute
+  end
+
+  def down
+    # no-op
+  end
+end