Fix argument mismatch failure for neutron-check-nvp-config

Use sys.argv directly.

Fix bug #1243888

Change-Id: I9cb6ca841d004baf72dd68e44be673c361c2ed05
Updated from global requirements

Change-Id: Ifbcffab245f7dee50f5a84489011e220a3f8fea8
Merge "Updated from global requirements"
Merge "Fix argument mismatch failure for neutron-check-nvp-config"