Test coverage in ArtifactHandlerClient

Increase coverage from 34% to 83%
Fix for Sonar major issue on branch coverage

Issue-ID: APPC-1436
Change-Id: Ie26e2cb71c833e4f086da2a238bd6f956bd85f33
Signed-off-by: Joss Armstrong <joss.armstrong@ericsson.com>
diff --git a/appc-inbound/appc-design-services/provider/pom.xml b/appc-inbound/appc-design-services/provider/pom.xml
index e3ecf88..4593a2f 100755
--- a/appc-inbound/appc-design-services/provider/pom.xml
+++ b/appc-inbound/appc-design-services/provider/pom.xml
@@ -58,6 +58,12 @@
             <scope>test</scope>
         </dependency>
         <dependency>
+            <groupId>org.javassist</groupId>
+            <artifactId>javassist</artifactId>
+            <version>3.22.0-GA</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
             <groupId>org.onap.appc</groupId>
             <artifactId>appc-design-services-model</artifactId>
             <version>${project.version}</version>