Added few more APIs support

Added getAllSubscriptionInfoList and setPhoneNumber support. Allowed
carrier privilege apps to get full subscription info on their
associated subscriptions.

Bug: 239607619
Test: atest SubscriptionManagerServiceTest
Merged-In: I784c5aaa8fcfc84d3f6abac451fd52105893198a
Change-Id: I784c5aaa8fcfc84d3f6abac451fd52105893198a