Update asserts in test_epoch_data_valid to use util.assertNear
Update asserts in test_epoch_data_valid to use util.assertNear

Change-Id: I4b74ebdf745e052199f884532894017800ec6d13
Signed-off-by: Christopher M. Cantalupo <9cf3ecca60a3dd7112ab0e7250bedb8a752e3958@intel.com>

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