Update for java 9

pom.xml

diff --git a/pom.xml b/pom.xml
index 288b475..54587f8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -34,7 +34,7 @@
   <parent>
     <groupId>io.vertx</groupId>
     <artifactId>vertx-ext-parent</artifactId>
-    <version>26</version>
+    <version>27</version>
   </parent>
 
   <artifactId>vertx-auth</artifactId>

vertx-auth-htdigest/pom.xml

diff --git a/vertx-auth-htdigest/pom.xml b/vertx-auth-htdigest/pom.xml
index e539ceb..57eab4c 100644
--- a/vertx-auth-htdigest/pom.xml
+++ b/vertx-auth-htdigest/pom.xml
@@ -42,7 +42,9 @@
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-jar-plugin</artifactId>
         <configuration>
-          <useDefaultManifestFile>true</useDefaultManifestFile>
+          <archive>
+            <manifestFile>${project.build.outputDirectory}/META-INF/MANIFEST.MF</manifestFile>
+          </archive>
         </configuration>
       </plugin>
 

vertx-auth-mongo/pom.xml

diff --git a/vertx-auth-mongo/pom.xml b/vertx-auth-mongo/pom.xml
index 0767473..5d1ce92 100644
--- a/vertx-auth-mongo/pom.xml
+++ b/vertx-auth-mongo/pom.xml
@@ -58,7 +58,9 @@
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-jar-plugin</artifactId>
         <configuration>
-          <useDefaultManifestFile>true</useDefaultManifestFile>
+          <archive>
+            <manifestFile>${project.build.outputDirectory}/META-INF/MANIFEST.MF</manifestFile>
+          </archive>
         </configuration>
       </plugin>
 

vertx-auth-oauth2/pom.xml

diff --git a/vertx-auth-oauth2/pom.xml b/vertx-auth-oauth2/pom.xml
index 6a6661e..99a8565 100644
--- a/vertx-auth-oauth2/pom.xml
+++ b/vertx-auth-oauth2/pom.xml
@@ -48,7 +48,9 @@
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-jar-plugin</artifactId>
         <configuration>
-          <useDefaultManifestFile>true</useDefaultManifestFile>
+          <archive>
+            <manifestFile>${project.build.outputDirectory}/META-INF/MANIFEST.MF</manifestFile>
+          </archive>
         </configuration>
       </plugin>
 

vertx-auth-shiro/pom.xml

diff --git a/vertx-auth-shiro/pom.xml b/vertx-auth-shiro/pom.xml
index 4ca2bef..2f23bce 100644
--- a/vertx-auth-shiro/pom.xml
+++ b/vertx-auth-shiro/pom.xml
@@ -161,7 +161,9 @@
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-jar-plugin</artifactId>
         <configuration>
-          <useDefaultManifestFile>true</useDefaultManifestFile>
+          <archive>
+            <manifestFile>${project.build.outputDirectory}/META-INF/MANIFEST.MF</manifestFile>
+          </archive>
         </configuration>
       </plugin>