NettyHttpHelper appends slash to an URI in case of empty CamelHttpPath

    @Test
    public void testEmptyPathDoesNotEndsWithSlash() throws Exception {
        MockEndpoint input = getMockEndpoint("mock:input");
        input.expectedBodiesReceived("Hello World");
        input.expectedHeaderReceived(Exchange.HTTP_PATH, "");
        input.expectedHeaderReceived(Exchange.HTTP_URI, "/foo");

        template.request("netty-http:http://localhost:{{port}}/foo", exchange -> {
            Message in = exchange.getIn();
            in.setBody("Hello World");
            in.setHeader(Exchange.HTTP_PATH, "");
        });

        assertMockEndpointsSatisfied();
    }

java.lang.AssertionError: mock://input Header with name CamelHttpPath for message: 0. Expected: <> but was: </>
Expected :<>
Actual   :</>
<Click to see difference>

	at org.apache.camel.component.mock.MockEndpoint.fail(MockEndpoint.java:1782)
	at org.apache.camel.component.mock.MockEndpoint.assertEquals(MockEndpoint.java:1759)
	at org.apache.camel.component.mock.MockEndpoint$4.assertOnIndex(MockEndpoint.java:608)
	at org.apache.camel.component.mock.MockEndpoint.onExchange(MockEndpoint.java:1599)