Add api for cts test to ignore plmn list from storage

Bug: 415139661
Test: atest ManualConnectCarrierRoamingSatelliteTest
Flag: EXEMPT bugfix
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:59714825f90f2a706c040b9f4cbb31ef3c9b6699)
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:50f146741d6d3c3c2f15f6cae4826717f7a71055)
Merged-In: I035467dbb3b657c59c307d24077f00523e4d2c95
Change-Id: I035467dbb3b657c59c307d24077f00523e4d2c95
2 files changed