Update Fingerprint/Face getSensorProperties

For each modality, updates/adds getSensorProperties() to return a list
of all sensors, containing their sensorId and other properties.

Bug: 160024833
Bug: 145978626

Test: atest KeyguardUpdateMonitorTest
Test: enroll/auth on fingerprint/face devices

Change-Id: I9adc4798183f53881f3592a8e72e6bd3595fbf1e