Fix operator and reboot account use cases

Error message in CT run:
Tags:	Verify_Redfish_User_Persistence_After_Reboot
Message:
InvalidCredentialsError: 0

Change-Id: Ib43c7a3a3bf6e502bd481e4ea4090eecc94d4b5c
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/redfish/account_service/test_user_account.robot b/redfish/account_service/test_user_account.robot
index 4109154..ffc7dbb 100644
--- a/redfish/account_service/test_user_account.robot
+++ b/redfish/account_service/test_user_account.robot
@@ -79,6 +79,7 @@
 
     # Reboot BMC.
     Redfish OBMC Reboot (off)  stack_mode=normal
+    Redfish.Login
 
     # Verify users after reboot.
     Redfish Verify User  admin_user     TestPwd123  Administrator   ${True}
@@ -305,7 +306,7 @@
     Redfish.Logout
 
     # Login with created user.
-    Run Keyword If  ${enabled} == False
+    Run Keyword If  ${enabled} == ${False}
     ...    Run Keyword And Expect Error  InvalidCredentialsError*
     ...    Redfish.Login  ${username}  ${password}
     ...  ELSE