More deflaking: wait 1.5 * poll interval for reload.

The default poll interval is 2 s, so wait 3.

This doesn't slow down the test; gomega.Eventually polls every 10 ms by
default.

integration_tests/reload_api_test.go

@@ -39,11 +39,11 @@ var _ = Describe("reload API endpoint", func() {
 
 			Eventually(func() int {
 				return routerRequest(routerPort, "/foo").StatusCode
-			}, time.Second*1).Should(Equal(301))
+			}, time.Second*3).Should(Equal(301))
 
 			Eventually(func() int {
 				return routerRequest(routerPort, "/bar").StatusCode
-			}, time.Second*1).Should(Equal(301))
+			}, time.Second*3).Should(Equal(301))
 		})
 	})