GUACAMOLE-2139: Inherit guacamole-client version via "revision" property (supported since Maven 3.5.0).

extensions/guacamole-vault/pom.xml

@@ -26,15 +26,13 @@
     <groupId>org.apache.guacamole</groupId>
     <artifactId>guacamole-vault</artifactId>
     <packaging>pom</packaging>
-    <version>1.6.1</version>
     <name>guacamole-vault</name>
     <url>http://guacamole.apache.org/</url>
 
     <parent>
         <groupId>org.apache.guacamole</groupId>
         <artifactId>extensions</artifactId>
-        <version>1.6.1</version>
-        <relativePath>../</relativePath>
+        <version>${revision}</version>
     </parent>
 
     <modules>
@@ -50,18 +48,4 @@
 
     </modules>
 
-    <dependencyManagement>
-        <dependencies>
-
-            <!-- Guacamole Extension API -->
-            <dependency>
-                <groupId>org.apache.guacamole</groupId>
-                <artifactId>guacamole-ext</artifactId>
-                <version>1.6.1</version>
-                <scope>provided</scope>
-            </dependency>
-
-        </dependencies>
-    </dependencyManagement>
-
 </project>