Update power on keyword and fix import directive

Changes:
    - Update REST power on with Redfish keyword.
    - Fix test_sanity.robot': Unsupported file format 'py'.

Change-Id: I25ceb73abbb62a68d644902c014bf2ae7c6f49d1
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/openpower/ras/test_sanity.robot b/openpower/ras/test_sanity.robot
index dbbaa77..b23f58a 100644
--- a/openpower/ras/test_sanity.robot
+++ b/openpower/ras/test_sanity.robot
@@ -5,12 +5,12 @@
 Resource        ../../lib/openbmc_ffdc_utils.robot
 Resource        ../../lib/openbmc_ffdc_methods.robot
 Resource        ../../lib/ras/host_utils.robot
-Resource        ../../lib/utils.py
 Resource        ../../openpower/ras/ras_utils.robot
+Library         ../../lib/utils.py
 Variables       ../../lib/ras/variables.py
 Variables       ../../data/variables.py
 
-Suite Setup      REST Power On
+Suite Setup      Redfish Power On
 Test Setup       Printn
 Test Teardown    FFDC On Test Case Fail