Add an HTTP/2 test for e20.vtc.

src/tests/e00020.vtc

@@ -41,8 +41,29 @@ client c1 {
 	rxresp
 	expect resp.status == 200
 	expect resp.bodylen == 40
+	expect resp.body == {
+		
+		<esX>This is a test: Hello world
+	}
 }
 
 client c1 -run
 varnish v1 -expect esi_errors == 2
 logexpect l1 -wait
+
+## HTTP/2
+
+varnish v1 -cliok "param.set feature +http2"
+
+client c1 {
+	stream 1 {
+		txreq
+		rxresp
+		expect resp.status == 200
+		expect resp.bodylen == 40
+		expect resp.body == {
+		
+		<esX>This is a test: Hello world
+	}
+	} -run
+} -run