webui: add creating user to steps in progress screen test

The test is destructive so we don't have to (and can't) do the cleanup.

ui/webui/test/check-progress

@@ -41,7 +41,8 @@ class TestInstallationProgress(anacondalib.VirtInstallMachineCase):
 
         i.open()
 
-        i.reach(i.steps.REVIEW)
+        # Create user on the first pass through users step
+        i.reach(i.steps.REVIEW, step_callbacks={i.steps.ACCOUNTS: lambda: create_user(self, cleanup=False)})
         i.begin_installation()
 
         # the warning can take longer to show up than the regular wait_in_text() timeout

ui/webui/test/helpers/users.py

@@ -66,7 +66,7 @@ def set_user_account(self, user_account, append=False, value_check=True):
         self.browser.set_input_text(sel, user_account, append=append, value_check=value_check)
 
 
-def create_user(test):
+def create_user(test, cleanup=True):
     p = Password(test.browser, CREATE_ACCOUNT_ID_PREFIX)
     u = Users(test.browser, test.machine)
 
@@ -75,4 +75,5 @@ def create_user(test):
     p.set_password_confirm(password)
     u.set_user_account("tester")
 
-    test.addCleanup(u.dbus_clear_users)
+    if cleanup:
+        test.addCleanup(u.dbus_clear_users)