Lazy load string resource in CarUserManagerHelper
This CL lazy loads the Driver string. Reason for this is two fold:
[1] We don't really need to expose a way for the default admin name.
Clients can instead call createNewAdminUser(NAME) or rename the default
admin after it gets created
[2] Robolectric doesn't like loading this particular string resource
BUG:122524984
Test: atest CarSetupWizardRoboTests
Test: atest CarServiceUnitTest
Change-Id: I60af62d6309a902e09c2cb673360c4a73713db09
2 files changed