skipper: update canary version to v0.21.84

[Changes](zalando/skipper@v0.21.76...v0.21.84)

* zalando/skipper#3060
* zalando/skipper#3061
* zalando/skipper#3062
* zalando/skipper#3063
* zalando/skipper#3064
* zalando/skipper#3057
* zalando/skipper#3055
* zalando/skipper#3053

Also configures required min-drop-probability for passive health checker.

Signed-off-by: Alexander Yastrebov <alexander.yastrebov@zalando.de>

cluster/config-defaults.yaml

@@ -79,7 +79,7 @@ skipper_ingress_max_replicas: "50"
 {{end}}
 skipper_ingress_cpu: "1000m"
 skipper_ingress_memory: "1500Mi"
-skipper_ingress_health_check_options: "period=10s,min-requests=10,max-drop-probability=0.9"
+skipper_ingress_health_check_options: "period=10s,min-requests=10,min-drop-probability=0.05,max-drop-probability=0.9"
 
 # Enables deployment of canary version
 skipper_ingress_canary_enabled: "true"

cluster/manifests/skipper/deployment.yaml

@@ -1,5 +1,5 @@
 {{ $internal_version := "v0.21.76-905" }}
-{{ $canary_internal_version := "v0.21.76-905" }}
+{{ $canary_internal_version := "v0.21.84-913" }}
 
 {{/* Optional canary arguments separated by "[cf724afc]" to allow whitespaces, e.g. "-foo=has a whitespace[cf724afc]-baz=qux" */}}
 {{ $canary_args := "" }}