pycodestyle: Module level import not at top of file

Changes:
     - Added NOQA on python files import to skip CI
     - Fix import order reported by CI.

Tested:
     - CI will catch this if there is error

Change-Id: I39a11d3e815a08488671ed948f073828e19aee37
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/bin/obmc_ser_num b/bin/obmc_ser_num
index ba620c8..4057316 100755
--- a/bin/obmc_ser_num
+++ b/bin/obmc_ser_num
@@ -11,9 +11,9 @@
 save_path_0 = sys.path[0]
 del sys.path[0]
 
-from gen_arg import *
-from gen_print import *
-from gen_valid import *
+from gen_arg import *     # NOQA
+from gen_print import *   # NOQA
+from gen_valid import *   # NOQA
 
 # Restore sys.path[0].
 sys.path.insert(0, save_path_0)