Replace generated server URL in Swagger UI

The generated server URL uses HTTP regardless of the protocol used to view Swagger UI.
HTTP requests to CF will fail with the message

	TypeError: NetworkError when attempting to fetch resource.

Author: anderslindho

pom.xml

@@ -199,6 +199,11 @@
             <artifactId>micrometer-registry-prometheus</artifactId>
             <scope>runtime</scope>
         </dependency>
+        <dependency>
+            <groupId>io.swagger.core.v3</groupId>
+            <artifactId>swagger-core</artifactId>
+            <version>2.2.20</version>
+        </dependency>
     </dependencies>
     <build>
         <!-- read properties from the pom file and add them to the application.properties -->

src/main/java/org/phoebus/channelfinder/Application.java

@@ -20,6 +20,8 @@
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import io.swagger.v3.oas.annotations.OpenAPIDefinition;
+import io.swagger.v3.oas.annotations.servers.Server;
 import org.phoebus.channelfinder.example.PopulateService;
 import org.phoebus.channelfinder.processors.ChannelProcessor;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -38,6 +40,11 @@
 @EnableAutoConfiguration
 @ComponentScan(basePackages="org.phoebus.channelfinder")
 @EnableScheduling
+@OpenAPIDefinition(
+    servers = {
+        @Server(url = "/")
+    }
+)
 @SpringBootApplication
 public class Application implements ApplicationRunner {