Add Feature-Policy header support

pkg/config/dynamic/fixtures/sample.toml

@@ -384,6 +384,7 @@
         contentSecurityPolicy = "foobar"
         publicKey = "foobar"
         referrerPolicy = "foobar"
+        featurePolicy = "foobar"
         isDevelopment = true
         [http.middlewares.Middleware8.headers.customRequestHeaders]
           name0 = "foobar"
@@ -476,4 +477,4 @@
     [tls.stores.Store1]
       [tls.stores.Store1.defaultCertificate]
         certFile = "foobar"
-        keyFile = "foobar"
+        keyFile = "foobar"

pkg/config/dynamic/middlewares.go

@@ -167,6 +167,7 @@ type Headers struct {
 	ContentSecurityPolicy   string            `json:"contentSecurityPolicy,omitempty" toml:"contentSecurityPolicy,omitempty" yaml:"contentSecurityPolicy,omitempty"`
 	PublicKey               string            `json:"publicKey,omitempty" toml:"publicKey,omitempty" yaml:"publicKey,omitempty"`
 	ReferrerPolicy          string            `json:"referrerPolicy,omitempty" toml:"referrerPolicy,omitempty" yaml:"referrerPolicy,omitempty"`
+	FeaturePolicy           string            `json:"featurePolicy,omitempty" toml:"featurePolicy,omitempty" yaml:"featurePolicy,omitempty"`
 	IsDevelopment           bool              `json:"isDevelopment,omitempty" toml:"isDevelopment,omitempty" yaml:"isDevelopment,omitempty"`
 }
 
@@ -208,6 +209,7 @@ func (h *Headers) HasSecureHeadersDefined() bool {
 		h.ContentSecurityPolicy != "" ||
 		h.PublicKey != "" ||
 		h.ReferrerPolicy != "" ||
+		h.FeaturePolicy != "" ||
 		h.IsDevelopment)
 }