Update managed services tests that were broken on HSUM

The setup assumes that 10 != mUserId, which maybe was the case for non-HSUM setups (hence the test passing locally) but was not the case in an HSUM environment.

Fixes: 414941297
Test: presubmit, atest rerun of failing tests with hsum configuration
Flag: EXEMPT test fix only
Change-Id: I52210061ea7687330b11407770dbea2ec283f1a2