Merge "Expose some carrier config keys for RTT" am: 4fb19f1550 am: 56f0f3a67b am: 370924cafc am: b2474e5f88 am: 5a2cd5617d

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1423856

Change-Id: Ia6c3cd4f2b0d272fc05a269cbdbd8766e81754f5