bug 1045. Show error if any at ns-list when ns operation is PROCESSING

Change-Id: I59698403c93fe232b804e607ab45feaa9c0a67e1
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>
diff --git a/osmclient/scripts/osm.py b/osmclient/scripts/osm.py
index bd61408..e1dbb8e 100755
--- a/osmclient/scripts/osm.py
+++ b/osmclient/scripts/osm.py
@@ -359,8 +359,8 @@
                 vim = vim_name
             current_operation = "{} ({})".format(nsr['currentOperation'],nsr['currentOperationID'])
             error_details = "N/A"
-            if ns_state == "BROKEN" or ns_state == "DEGRADED":
-                error_details = "{}\nDetail: {}".format(nsr['errorDescription'],nsr['errorDetail'])
+            if ns_state == "BROKEN" or ns_state == "DEGRADED" or nsr['errorDescription']:
+                error_details = "{}\nDetail: {}".format(nsr['errorDescription'], nsr['errorDetail'])
         else:
             nsopdata = ctx.obj.ns.get_opdata(ns['id'])
             nsr = nsopdata['nsr:nsr']