Use proper version property for dependencies

Backport of fix on master by Hadrian Zbarcea <hadrian@apache.org>
diff --git a/sandbox/nosql/pom.xml b/sandbox/nosql/pom.xml
index 847592a..f4ac6d4 100644
--- a/sandbox/nosql/pom.xml
+++ b/sandbox/nosql/pom.xml
@@ -52,7 +52,7 @@
         <dependency>
             <groupId>org.apache.brooklyn</groupId>
             <artifactId>brooklyn-core</artifactId>
-            <version>${brooklyn.version}</version>
+            <version>${project.version}</version>
             <classifier>tests</classifier>
             <scope>test</scope>
         </dependency>
@@ -66,13 +66,13 @@
         <dependency>
             <groupId>org.apache.brooklyn</groupId>
             <artifactId>brooklyn-test-support</artifactId>
-            <version>${brooklyn.version}</version>
+            <version>${project.version}</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.apache.brooklyn</groupId>
             <artifactId>brooklyn-locations-jclouds</artifactId>
-            <version>${brooklyn.version}</version>
+            <version>${project.version}</version>
             <scope>test</scope>
         </dependency>
     </dependencies>