feat: use dedicated entrypoint for the tunnels

Co-authored-by: Fernandez Ludovic <[ldez@users.noreply.github.com](mailto:ldez@users.noreply.github.com)>

pkg/config/static/static_config_test.go

@@ -0,0 +1,88 @@
+package static
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/traefik/traefik/v2/pkg/provider/hub"
+)
+
+func TestHasEntrypoint(t *testing.T) {
+	tests := []struct {
+		desc        string
+		entryPoints map[string]*EntryPoint
+		assert      assert.BoolAssertionFunc
+	}{
+		{
+			desc:   "no user defined entryPoints",
+			assert: assert.False,
+		},
+		{
+			desc: "user defined entryPoints",
+			entryPoints: map[string]*EntryPoint{
+				"foo": {},
+			},
+			assert: assert.True,
+		},
+		{
+			desc: "user defined entryPoints + hub entryPoint (tunnel)",
+			entryPoints: map[string]*EntryPoint{
+				"foo":                {},
+				hub.TunnelEntrypoint: {},
+			},
+			assert: assert.True,
+		},
+		{
+			desc: "hub entryPoint (tunnel)",
+			entryPoints: map[string]*EntryPoint{
+				hub.TunnelEntrypoint: {},
+			},
+			assert: assert.False,
+		},
+		{
+			desc: "user defined entryPoints + hub entryPoint (api)",
+			entryPoints: map[string]*EntryPoint{
+				"foo":             {},
+				hub.APIEntrypoint: {},
+			},
+			assert: assert.True,
+		},
+		{
+			desc: "hub entryPoint (api)",
+			entryPoints: map[string]*EntryPoint{
+				hub.APIEntrypoint: {},
+			},
+			assert: assert.True,
+		},
+		{
+			desc: "user defined entryPoints + hub entryPoints (tunnel, api)",
+			entryPoints: map[string]*EntryPoint{
+				"foo":                {},
+				hub.TunnelEntrypoint: {},
+				hub.APIEntrypoint:    {},
+			},
+			assert: assert.True,
+		},
+		{
+			desc: "hub entryPoints (tunnel, api)",
+			entryPoints: map[string]*EntryPoint{
+				hub.TunnelEntrypoint: {},
+				hub.APIEntrypoint:    {},
+			},
+			assert: assert.False,
+		},
+	}
+
+	for _, test := range tests {
+		test := test
+		t.Run(test.desc, func(t *testing.T) {
+			t.Parallel()
+
+			cfg := &Configuration{
+				EntryPoints: test.entryPoints,
+			}
+
+			test.assert(t, cfg.hasUserDefinedEntrypoint())
+		})
+	}
+}