NSB setup inventory name changed

NSB setup inventory name changed

NSB setup script [1] fails when retrieving the inventory file. This script
is going to be deprecated but we still support it.

[1] https://github.com/opnfv/yardstick/blob/master/nsb_setup.sh

JIRA: YARDSTICK-1247

Change-Id: I3798531652b0e3a1a007d1d9434998fdd54645d7
Signed-off-by: Rodolfo Alonso Hernandez <rodolfo.alonso.hernandez@intel.com>
Signed-off-by: Mytnyk, Volodymyr <volodymyrx.mytnyk@intel.com>
(cherry picked from commit 370b703896656f6b6949de05b6c44c98a72eee46)