Changed PNOR to Host in code update test case names

We were having issues using Robot's include option with test
cases with 'PNOR' in the name. Robot would interpret the O and R
in 'PNOR' as an OR operator rather than a part of the test case
name.

Change-Id: I7b5c686f8a34576b3f59ee0051e33c3c054aa59a
Signed-off-by: Charles Paul Hofer <Charles.Hofer@ibm.com>
diff --git a/extended/code_update/code_update.robot b/extended/code_update/code_update.robot
index 27a274b..a4fcd37 100644
--- a/extended/code_update/code_update.robot
+++ b/extended/code_update/code_update.robot
@@ -39,9 +39,9 @@
 
 *** Test Cases ***
 
-REST PNOR Code Update
+REST Host Code Update
     [Documentation]  Do a PNOR code update by uploading image on BMC via REST.
-    [Tags]  REST_PNOR_Code_Update
+    [Tags]  REST_Host_Code_Update
     [Setup]  Code Update Setup
 
     OperatingSystem.File Should Exist  ${IMAGE_FILE_PATH}