Fix config option names in ml2_conf_sriov.ini

Config option names in ml2_conf_sriov.ini file are
not in sync with definitions in source code.

Change-Id: Ic8f7b6b8e9acd022623daabd2b209b864caa0b06
Closes-Bug: #1357339
Merge "Fix config option names in ml2_conf_sriov.ini"