[tests][dvfs] Corrected the dvfs unit test
[tests][dvfs] Corrected the dvfs unit test

mit-carbon/Graphite,8l/Graphite,8l/Graphite,victorisildur/Graphite,victorisildur/Graphite,nkawahara/Graphite,nkawahara/Graphite,8l/Graphite,victorisildur/Graphite,mit-carbon/Graphite,mit-carbon/Graphite,mit-carbon/Graphite,8l/Graphite,fhijaz/Graphite,nkawahara/Graphite,victorisildur/Graphite,fhijaz/Graphite,nkawahara/Graphite,fhijaz/Graphite,fhijaz/Graphite