Add a helper function to get build config values in integration tests
Add a helper function to get build config values in integration tests

Signed-off-by: Daniel Wilson <c0a46a3457096bdbf302f01d2d37cf72d30c651c@intel.com>
Change-Id: I635b2b753c2ea0c03f8a77ce4f83ddefcf0b7f32

geopm/geopm,geopm/geopm,cmcantalupo/geopm,geopm/geopm,cmcantalupo/geopm,geopm/geopm,geopm/geopm,cmcantalupo/geopm,cmcantalupo/geopm,cmcantalupo/geopm