Allow admin users to install WiFi client certificates

Grants admin users the ability to install WiFi client certificates,
laying the groundwork for enabling user-imported WiFi certificates
in HSUM mode.

Bug: b/370013519
Flag: EXEMPT bugfix
Test: manually installed and removed client certificate for WiFi
Change-Id: Ic9d009365e9de400ea285fb55a93509e95a49e06
1 file changed