NIAP: Add a new argument to determine single user mode status.

This is being used to section off the feature to single user mode
devices as provisioned devices requiring compliance will be
single user mode only.  This is a stop-gap waiting on a vendor code fix.

RE keystore (qseecom) problems: b/129759834

Bug: b/117993149
Test: atest net_test_bluetooth
Change-Id: I4fb3f4e663a051db8f8ba12901a20fa18ebf197e