Specified test scope for junit/testng/mockito

In some modules junit, testng, and mockito where included
with default scope. Also, fixed the versions to reference
a property from a parent pom.

Change-Id: I2477bc631a7593c7176087c9088d2c9f2c2a34ee
Issue-ID: SDC-1065
Signed-off-by: vempo <vitaliy.emporopulo@amdocs.com>
diff --git a/services/activity-spec/pom.xml b/services/activity-spec/pom.xml
index 653ebec..a5c8358 100644
--- a/services/activity-spec/pom.xml
+++ b/services/activity-spec/pom.xml
@@ -102,6 +102,11 @@
                 <version>1.16.20</version>
                 <scope>provided</scope>
             </dependency>
+            <dependency>
+                <groupId>org.mockito</groupId>
+                <artifactId>mockito-all</artifactId>
+                <version>${mockito.all.version}</version>
+            </dependency>
         </dependencies>
     </dependencyManagement>