Add some more routes for demos

zuul-proxy/src/main/resources/application.properties

@@ -1,10 +1,15 @@
 spring.application.name: zuulproxy
 server.port: 9900
 zuul.ignored-patterns: /missing
+zuul.routes.admin.path: /admin/**
+zuul.routes.admin.url: forward:/
 zuul.routes.good.path: /good/**
 zuul.routes.good.url: forward:/good
 zuul.routes.bad.path: /bad/**
 zuul.routes.bad.url: http://localhost:7777
+zuul.routes.gh.path: /gh/**
+zuul.routes.gh.url: https://github.com
+zuul.routes.gh.ignored-headers: Set-Cookie,Cookie
 zuul.routes.ui.path: /**
 zuul.routes.ui.url: http://localhost:8080
 logging.level.org.springframework.web: DEBUG