healthcheck: add support at the load-balancers of services level

Co-authored-by: Dmitry Sharshakov <d3dx12.xx@gmail.com>
Co-authored-by: Julien Salleyron <julien.salleyron@gmail.com>
Co-authored-by: Jean-Baptiste Doumenjou <925513+jbdoumenjou@users.noreply.github.com>
Co-authored-by: Romain <rtribotte@users.noreply.github.com>
Co-authored-by: Tom Moulard <tom.moulard@traefik.io>

docs/content/reference/dynamic-configuration/file.toml

@@ -69,6 +69,8 @@
         service = "foobar"
         maxBodySize = 42
 
+        [http.services.Service02.mirroring.healthCheck]
+
         [[http.services.Service02.mirroring.mirrors]]
           name = "foobar"
           percent = 42
@@ -78,6 +80,7 @@
           percent = 42
     [http.services.Service03]
       [http.services.Service03.weighted]
+        [http.services.Service03.weighted.healthCheck]
 
         [[http.services.Service03.weighted.services]]
           name = "foobar"

docs/content/reference/dynamic-configuration/file.yaml

@@ -75,6 +75,7 @@ http:
       mirroring:
         service: foobar
         maxBodySize: 42
+        healthCheck: {}
         mirrors:
         - name: foobar
           percent: 42
@@ -82,6 +83,7 @@ http:
           percent: 42
     Service03:
       weighted:
+        healthCheck: {}
         services:
         - name: foobar
           weight: 42

docs/content/reference/dynamic-configuration/kv-ref.md

@@ -208,12 +208,14 @@
 | `traefik/http/services/Service01/loadBalancer/sticky/cookie/name` | `foobar` |
 | `traefik/http/services/Service01/loadBalancer/sticky/cookie/sameSite` | `foobar` |
 | `traefik/http/services/Service01/loadBalancer/sticky/cookie/secure` | `true` |
+| `traefik/http/services/Service02/mirroring/healthCheck` | `` |
 | `traefik/http/services/Service02/mirroring/maxBodySize` | `42` |
 | `traefik/http/services/Service02/mirroring/mirrors/0/name` | `foobar` |
 | `traefik/http/services/Service02/mirroring/mirrors/0/percent` | `42` |
 | `traefik/http/services/Service02/mirroring/mirrors/1/name` | `foobar` |
 | `traefik/http/services/Service02/mirroring/mirrors/1/percent` | `42` |
 | `traefik/http/services/Service02/mirroring/service` | `foobar` |
+| `traefik/http/services/Service03/weighted/healthCheck` | `` |
 | `traefik/http/services/Service03/weighted/services/0/name` | `foobar` |
 | `traefik/http/services/Service03/weighted/services/0/weight` | `42` |
 | `traefik/http/services/Service03/weighted/services/1/name` | `foobar` |