Change PATH for "ip addr list" command so it could work with cloud-user

It's needed for some custom images like RHEL7 where /usr/sbin/ is not
enabled by default for users under test.

Change-Id: Ib75c468cc15f9912e110af4748734bf0b48bcf5d
Closes-bug: 1689279
1 file changed
tree: dfdd07109d2cf7ae05907114833bde48ceb31997
  1. neutron/