Feature-9904: Enhancing NG-UI to enable Juju operational view dashboard

New functions implemented in N2VC (Specific for VNF)
    - update_vca_status() in n2vc.juju.conn.py
    - get_executed_actions() in libjuju.py
    - get_application_configs() in libjuju.py

Unit testing added for the above implemented new functions
    - UpdateVcaStatus in test_n2vc_juju_conn.py
    - GetExecutedActionsTest in test_libjuju.py
    - GetApplicationConfigsTest in test_libjuju.py

Change-Id: I7d750d8c39bc7bc061568c28d29f53d1b87c4c23
Signed-off-by: gspri <priyadharshini.g@tataelxsi.co.in>
Signed-off-by: ksaikiranr <saikiran.k@tataelxsi.co.in>
diff --git a/n2vc/tests/unit/utils.py b/n2vc/tests/unit/utils.py
index d960c70..92ab7a8 100644
--- a/n2vc/tests/unit/utils.py
+++ b/n2vc/tests/unit/utils.py
@@ -110,6 +110,9 @@
     async def get_actions(self):
         return ["existing_action"]
 
+    async def get_config(self):
+        return ["app_config"]
+
     units = [FakeUnit(), FakeUnit()]