Fetch correct spring.application.name in Spring Cloud 1.x

[QilongZhang]

After #320 ， we cant fetch correct spring.application.name in Spring Cloud 1.x. As BootstrapApplicationListener set a default name. The code patch is similar to the following:

String configName = environment
         .resolvePlaceholders("${spring.cloud.bootstrap.name:bootstrap}");
SpringApplicationBuilder builder = new SpringApplicationBuilder()
	 profiles(environment.getActiveProfiles()).bannerMode(Mode.OFF)
	 .environment(bootstrapEnvironment)
	 .properties("spring.application.name:" + configName)
	 .registerShutdownHook(false).logStartupInfo(false).web(false);