Add simulator to manually override voicemail carrier configs

This allow new carriers to test their values or help debug/QA for situations like disabling prefetch.

Bug: 63013427
Test: N/A use at your own risk.
PiperOrigin-RevId: 162003756
Change-Id: Ifb227163bc3f2a94c1c07cc60fdc3a031fd625c8
14 files changed
tree: a0f7fa0d15c1acbd06128d9f627fd7a36fca1ac2
  1. assets/
  2. java/
  3. Android.mk
  4. AndroidManifest.xml
  5. LICENSE