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

In ns.py file renamed the update_vcaStatus method call to update_vca_status
based on the N2VC review comment

https://osm.etsi.org/gerrit/#/c/osm/N2VC/+/10332/



Change-Id: I004bc93f6d971a1747f6763e4be688ddc608a209
Signed-off-by: selvi.j <selvi.j@tataelxsi.co.in>