Add Registered PLMN to NetworkRegistrationInfo

-Add the Registered PLMN field to construction of
 NetworkRegistrationInfo.
-Update unit tests to match the updated builder.

Bug: 135921133
Test: atest FrameworksTelephonyTests
Merged-In: I56cc6cd16f8f72930e2d9e7817a46ea096a819b0
Change-Id: I56cc6cd16f8f72930e2d9e7817a46ea096a819b0
(cherry picked from commit e2ef4473)