Add spring.http.client.factory property to application configuration

Author: robertjndw

server/src/main/resources/application.properties

@@ -1,5 +1,6 @@
 spring.application.name=in-class-exercise
 server.port=8080
+spring.http.client.factory=simple
 server.servlet.context-path=/api
 spring.jackson.date-format=yyyy-MM-dd
 spring.jackson.serialization.write-dates-as-timestamps=false