Fix pylint warning and errors

Changes:
     - Recommended changed by pylint report

Tested:
     python3 -m pylint lib/vpd_utils.py

Change-Id: Id910bf96350462c0bbfc4db12b42202929dea3f7
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/lib/vpd_utils.py b/lib/vpd_utils.py
index eb31c71..03581bb 100644
--- a/lib/vpd_utils.py
+++ b/lib/vpd_utils.py
@@ -4,9 +4,9 @@
 VPD functions.
 """
 
+import json
 import func_args as fa
 import bmc_ssh_utils as bsu
-import json
 
 
 def vpdtool(option_string, **bsu_options):
@@ -20,26 +20,27 @@
 
     vpd_results:
       [/system/chassis/motherboard]:
-        [PN]:                                         PN12345
-        [SN]:                                         YL2E2D010000
-        [LocationCode]:                               U78DA.ND1.       -P0
-        [CC]:                                         2E2D
-        [DR]:                                         SYSTEM BACKPLANE
-        [FN]:                                         F191014
-        [type]:                                       xyz.openbmc_project.Inventory.Item.Board.Motherboard
+        [PN]:                PN12345
+        [SN]:                YL2E2D010000
+        [LocationCode]:      U78DA.ND1.       -P0
+        [CC]:                2E2D
+        [DR]:                SYSTEM BACKPLANE
+        [FN]:                F191014
+        [type]:              xyz.openbmc_project.Inventory.Item.Board.Motherboard
       [/system/chassis/motherboard/ebmc_card_bmc]:
-        [PN]:                                         PN12345
-        [SN]:                                         YL6B58010000
-        [LocationCode]:                               U78DA.ND1.       -P0-C5
-        [CC]:                                         6B58
-        [DR]:                                         EBMC
-        [FN]:                                         F191014
-        [type]:                                       xyz.openbmc_project.Inventory.Item.Bmc
+        [PN]:                PN12345
+        [SN]:                YL6B58010000
+        [LocationCode]:      U78DA.ND1.       -P0-C5
+        [CC]:                6B58
+        [DR]:                EBMC
+        [FN]:                F191014
+        [type]:              xyz.openbmc_project.Inventory.Item.Bmc
 
     Description of argument(s):
-    option_string                   A string of options which are to be processed by the vpd-tool command.
-    bsu_options                     Options to be passed directly to bmc_execute_command. See its prolog for
-                                    details.
+    option_string            A string of options which are to be processed by
+                             the vpd-tool command.
+    bsu_options              Options to be passed directly to bmc_execute_command.
+                             See its prolog for details.
     """
 
     bsu_options = fa.args_to_objects(bsu_options)