* Migrate server-webmvc properties to new namespace Currently, prefix is spring.cloud.gateway.mvc, the new convention is spring.cloud.gateway.server.webmvc See gh-3363 Fixes gh-3647 * Properties migration for server-webmvc Migrate from spring.cloud.gateway.mvc to spring.cloud.gateway.server.webmvc Fixes gh-3647 * formatting * Fixes test properties * Fixes test properties