netconf provider basic unitest and fix ONOS-5532

Change-Id: I31f31ae5bea580d0cd5ee05bf88339002ea741fc
diff --git a/providers/netconf/device/pom.xml b/providers/netconf/device/pom.xml
index 7d2856a..baed8d5 100644
--- a/providers/netconf/device/pom.xml
+++ b/providers/netconf/device/pom.xml
@@ -46,6 +46,11 @@
             <artifactId>onos-netconf-ctl</artifactId>
             <version>${project.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.easymock</groupId>
+            <artifactId>easymock</artifactId>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>