Add temperature, power, frequency tests to GPU stress test

Add GPU temperature, power, frequency utilities to
utils_os.robot, and remove the common Test Setup Execution
utility from syslib.

Resolves  openbmc/openbmc-test-automation#1030
Resolves  openbmc/openbmc-test-automation#637
Change-Id: I823b9956b61d9c35b09faa4e7a4372aa9244a805
Signed-off-by: Steven Sombar <ssombar@us.ibm.com>
5 files changed