Fix ServersTransport reference from IngressRoute service definition

Co-authored-by: Jean-Baptiste Doumenjou <925513+jbdoumenjou@users.noreply.github.com>

pkg/provider/kubernetes/crd/fixtures/with_cross_namespace.yml

@@ -9,23 +9,31 @@ spec:
     - foo
 
   routes:
-  - match: Host(`foo.com`) && PathPrefix(`/bar`)
-    kind: Rule
-    priority: 12
-    services:
-    - name: whoami-svc
-      namespace: cross-ns
-      port: 80
-    - name: tr-svc-wrr1
-      kind: TraefikService
-    - name: tr-svc-wrr2
-      namespace: cross-ns
-      kind: TraefikService
-    - name: tr-svc-mirror1
-      kind: TraefikService
-    - name: tr-svc-mirror2
-      namespace: cross-ns
-      kind: TraefikService
+    - match: Host(`foo.com`) && PathPrefix(`/bar`)
+      kind: Rule
+      priority: 12
+      services:
+      - name: whoami-svc
+        namespace: cross-ns
+        port: 80
+      - name: tr-svc-wrr1
+        kind: TraefikService
+      - name: tr-svc-wrr2
+        namespace: cross-ns
+        kind: TraefikService
+      - name: tr-svc-mirror1
+        kind: TraefikService
+      - name: tr-svc-mirror2
+        namespace: cross-ns
+        kind: TraefikService
+
+    - match: Host(`bar.com`) && PathPrefix(`/foo`)
+      kind: Rule
+      services:
+        - name: whoami-svc
+          namespace: cross-ns
+          port: 80
+          serversTransport: test
 
 ---
 apiVersion: traefik.containo.us/v1alpha1
@@ -89,3 +97,13 @@ spec:
         namespace: cross-ns
         percent: 20
         port: 80
+
+---
+apiVersion: traefik.containo.us/v1alpha1
+kind: ServersTransport
+metadata:
+  name: test
+  namespace: foo
+
+spec:
+  serverName: "test"

pkg/provider/kubernetes/crd/fixtures/with_servers_transport.yml

@@ -109,3 +109,39 @@ spec:
     dialTimeout: 42
     responseHeaderTimeout: 42s
     idleConnTimeout: 42ms
+
+---
+apiVersion: traefik.containo.us/v1alpha1
+kind: ServersTransport
+metadata:
+  name: test
+  namespace: default
+
+spec:
+  serverName: "test"
+
+---
+apiVersion: traefik.containo.us/v1alpha1
+kind: IngressRoute
+metadata:
+  name: test.route
+  namespace: default
+
+spec:
+  entryPoints:
+    - foo
+
+  routes:
+    - match: Host(`foo.com`)
+      kind: Rule
+      services:
+        - name: external-svc-with-https
+          port: 443
+          serversTransport: test
+        - name: whoamitls
+          port: 443
+          serversTransport: default-test
+        - name: whoami3
+          port: 8443
+          serversTransport: foo-test@kubernetescrd
+