Python 2.x and 3.x compatible changes

Changes:
    - Update imports and syntax.

Resolves  openbmc/openbmc-test-automation#1426

Change-Id: I4cf400429c5f863ed8f30d24fa871b1c564d9f2a
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/lib/disable_warning_urllib.py b/lib/disable_warning_urllib.py
index e9810c5..55a7239 100644
--- a/lib/disable_warning_urllib.py
+++ b/lib/disable_warning_urllib.py
@@ -1,7 +1,10 @@
 #!/usr/bin/python
 import logging
 import warnings
-import httplib
+try:
+    import httplib
+except ImportError:
+    import http.client
 
 warnings.filterwarnings("ignore")