add support for http2-max-requests in configmap

internal/ingress/controller/config/config.go

@@ -178,6 +178,12 @@ type Configuration struct {
 	// HTTP2MaxHeaderSize Limits the maximum size of the entire request header list after HPACK decompression
 	HTTP2MaxHeaderSize string `json:"http2-max-header-size,omitempty"`
 
+	// http://nginx.org/en/docs/http/ngx_http_v2_module.html#http2_max_requests
+	// HTTP2MaxRequests Sets the maximum number of requests (including push requests) that can be served
+	// through one HTTP/2 connection, after which the next client request will lead to connection closing
+	// and the need of establishing a new connection.
+	HTTP2MaxRequests int `json:"http2-max-requests,omitempty"`
+
 	// Enables or disables the header HSTS in servers running SSL
 	HSTS bool `json:"hsts,omitempty"`
 
@@ -562,6 +568,7 @@ func NewDefault() Configuration {
 		GenerateRequestId:          true,
 		HTTP2MaxFieldSize:          "4k",
 		HTTP2MaxHeaderSize:         "16k",
+		HTTP2MaxRequests:           1000,
 		HTTPRedirectCode:           308,
 		HSTS:                       true,
 		HSTSIncludeSubdomains:      true,