Rename enum to Enum to avoid clash to pip enum34 package

Change-Id: Ifd08423c87da9863c99e2ca82092e0b0609bea53
diff --git a/src/test/utils/EapTLS.py b/src/test/utils/EapTLS.py
index 6a68209..34cc6b8 100644
--- a/src/test/utils/EapTLS.py
+++ b/src/test/utils/EapTLS.py
@@ -15,7 +15,7 @@
 #
 import sys, os
 from EapolAAA import *
-from enum import *
+from Enum import *
 import noseTlsAuthHolder as tlsAuthHolder
 from scapy_ssl_tls.ssl_tls import *
 from scapy_ssl_tls.ssl_tls_crypto import *