Add a way to get the class name of SetupActivity and SettingsActivity

Now, there can be only one SetupActivity and one SettingsActivity for
one TIS apk though one TIS apk can contain several services. Each TIS
need to be able to have its own SetupActivity and SettingsActivity.

BUG: 15177340
Change-Id: I2d944e3ef35c3a981483ba643fd27b15925bab16
6 files changed