Enhance Command to Add Test Emergency Number

Allowed ability to specify routing when adding an emergency number for
emergency number test purposes rather than always defaulting to unknown routing.

Manual Testing Inputs:
-a 123:EMERGENCY
-a 123
-r 123
-p
-a 123:Normal
-a 123:unknown
-r 123
-p
-a 123:other
-p
-a 111:unknown
-a 222:emergency
-a 333:normal
-p

Bug: 242215408
Test: Manual Test
Change-Id: I7dc75ba8f8cdab1a1004e7e7f1099f71d3bbe753
1 file changed