Fixing jetty-continuation's bundle metadata

jetty-continuation/pom.xml

@@ -25,6 +25,23 @@
            </execution>
         </executions>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-jar-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>artifact-jar</id>
+            <goals>
+              <goal>jar</goal>
+            </goals>
+          </execution>
+        </executions>
+        <configuration>
+          <archive>
+            <manifestFile>${project.build.outputDirectory}/META-INF/MANIFEST.MF</manifestFile>
+          </archive>
+        </configuration>
+      </plugin>
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>findbugs-maven-plugin</artifactId>