Boot devices update

Changes:
    - Fix boot device patch path.
    - Update suite teardown for clean up

Change-Id: I6a8b6c0d5c1d91802e6842b402f4f405043dac21
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/redfish/systems/test_boot_devices.robot b/redfish/systems/test_boot_devices.robot
index b55e811..2d5b80d 100644
--- a/redfish/systems/test_boot_devices.robot
+++ b/redfish/systems/test_boot_devices.robot
@@ -64,7 +64,7 @@
     ...  BootSourceOverrideTarget=${override_target}
     ${payload}=  Create Dictionary  Boot=${data}
 
-    Redfish.patch  Systems/system  body=&{payload}
+    Redfish.Patch  /redfish/v1/Systems/system  body=&{payload}
 
     ${resp}=  Redfish.Get  /redfish/v1/Systems/system
     Should Be Equal As Strings  ${resp.dict["Boot"]["BootSourceOverrideEnabled"]}
@@ -76,7 +76,9 @@
 Suite Teardown Execution
     [Documentation]  Do the post suite teardown.
 
+    Redfish.Login
     Set And Verify BootSource And BootType  Disabled  None
+    Redfish.Logout
 
 
 Test Setup Execution