Fix for deleteVLAN command

The legacy rest command url is not case sensitive. With redfish, the url
is case sensitive and this command does not work.
Sending the command with "Delete".This works for both Rest and Redfish.

Tested by :
python openbmctool.py -U <user> -P <passwd> -H <host> network deleteVLAN -I <vlan>

Signed-off-by: Sunitha Harish <sunithaharish04@gmail.com>
Change-Id: If91def92c5420ebc93c9fa3231df11ef36a91e70
diff --git a/thalerj/openbmctool.py b/thalerj/openbmctool.py
index 6351d35..799375f 100755
--- a/thalerj/openbmctool.py
+++ b/thalerj/openbmctool.py
@@ -3393,7 +3393,7 @@
         @param session: the active session to use
     """
 
-    url = "https://" + host+"/xyz/openbmc_project/network/"+args.Interface+"/action/delete"
+    url = "https://" + host+"/xyz/openbmc_project/network/"+args.Interface+"/action/Delete"
     data = {"data": []}
 
     try:
@@ -3403,8 +3403,7 @@
     except(requests.exceptions.ConnectionError) as err:
         return connectionErrHandler(args.json, "ConnectionError", err)
     if res.status_code == 404:
-        return "The specified VLAN"+"("+args.Interface+"_"+args.Identifier\
-            +")" +" doesn't exist"
+        return "The specified VLAN"+"("+args.Interface+")" +" doesn't exist"
 
     return res.text