fix for tests not working

added required jetty dependencies through spring-boot-starter-jetty so this is the only dependency with scope=testing and transitive dependencies (core jetty libraries) aren't marked as such

mvn -P jetty spring-boot:run seems to work

pom.xml

@@ -354,6 +354,13 @@
             <scope>test</scope>
         </dependency>
 
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-jetty</artifactId>
+            <version>${spring_boot_version}</version>
+            <scope>test</scope>
+        </dependency>
+
     </dependencies>
 
     <build>