Add a flag for canary-only skipper-ingress deployment

Signed-off-by: Roman Zavodskikh <[email protected]>

Author: Roman Zavodskikh

cluster/config-defaults.yaml

@@ -77,6 +77,7 @@ skipper_ingress_memory: "1500Mi"
 
 # Enables deployment of canary version
 skipper_ingress_canary_enabled: "true"
+skipper_ingress_test_single_pod: "false"
 
 # When set to true (and dedicated node pool for skipper is also true) the
 # daemonset overhead will be subtracted from the cpu settings such

cluster/manifests/skipper/deployment.yaml

@@ -39,6 +39,8 @@ metadata:
 spec:
 {{ if index . "replicas" }}
   replicas: {{ .replicas }}
+{{ else if eq .Cluster.ConfigItems.skipper_ingress_test_single_pod "true" }}
+  replicas: 0
 {{ end }}
   strategy:
     rollingUpdate: