* Addressed comments:
* Removed Global filter bean with @Order annotation, now using class that implements Ordered
* Added logic to actually mutate the request entity (and the exchange) for the Modify Request example
* changed endpoint for languageServiceEndpoint in the chain requests example
* removed order from first simple global filter, since well be covering that with other global filter
* updated dependency management in spring-cloud-gateway pom.xml
* * renamed org package to com
* renamed spring.cloud package to springcloudgateway
* deleted SpringContextIntegrationTest, as per BAEL-14304
* updated spring Junit test to jupiter
* separated introduction-application properties from application.yml, fixing launch error due to file not found exception
* Added Service to use as Proxied Service
* Added global filters and debug logs for article
* fixed error in properties source, plus added GatewayFilter Factories
* implemented Modify Request example
* implemented Modify Response example
* implemented Chain Request example
* Added Tests:
* Live Test for gateway
* Integration tests for services
Fixed small issues
* renamed tests that were not following BDD naming
johnA1331
Gerardo Roza
catalin-burcea
Eric Martin