Fix function name mismatch in test case

The function name is mismatch with the function itself.
'test_user_only' function has the difinition of 'test_user_id_only', and
'test_user_id_only' function has the definition of 'test_user_only'.
This change fixes the function name mismatch with functionality.

Closes-bug: #1397882
Change-Id: Ib7368295a3d5705ab7a49cdb5dab586bef0f1450
Merge "Fix function name mismatch in test case"