FIX bug 576

Change-Id: I0c154cc730e13e860880cbb06091ed6ee5fbba11
diff --git a/instancehandler/views.py b/instancehandler/views.py
index e38e586..d71cd32 100644
--- a/instancehandler/views.py
+++ b/instancehandler/views.py
@@ -65,7 +65,7 @@
             "vimAccountId": request.POST.get('vimAccountId', ''),
         }
         if 'ssh_key' in request.POST and request.POST.get('ssh_key') != '':
-            ns_data["ssh_keys"] = request.POST.get('ssh_key')
+            ns_data["ssh_keys"] = [request.POST.get('ssh_key')]
 
         if 'config' in request.POST:
             ns_config = yaml.load(request.POST.get('config'))