Add daily CertificateTransparencyJob

Following a conversation with the Experiments team (b/374692404), it
appears we will not be able to use device config flags to trigger the
download of CT log lists.

This CL is the first of a series that will allow us to move away from
flags and instead rely on a daily job execution. For scheduling we rely
on the Android AlarmManager.

I previously attempted to schedule the daily job using the Android
JobScheduler. However, those attempts were unsuccessful beacause the
Tethering apex is not on the system_server classpath, so the system
would crash when attempting to load the class to execute the job.

Flag: com.android.net.ct.flags.certificate_transparency_job
Bug: 374692404
Test: NetworkSecurityUnitTests
Change-Id: I6ce44dcea464cab20d2df73b065e35c0f76dcbab
5 files changed