Add default_vm_number_string to carrier_configs

Add default_vm_number_string for CarrierConfigManager based on old
config files. Note that this no longer needs to be a string array, since
gid is now handled by within carrier_configs

Bug: 29873049
Change-Id: I56e4e3713c27f449fd892db501b6097c8c89c3c6
diff --git a/assets/carrier_config_20404.xml b/assets/carrier_config_20404.xml
index dff15ab..a82453c 100644
--- a/assets/carrier_config_20404.xml
+++ b/assets/carrier_config_20404.xml
@@ -4,12 +4,14 @@
         <int name="maxImageHeight" value="1944" />
         <int name="maxMessageSize" value="1048576" />
         <int name="maxImageWidth" value="2592" />
+        <string name="default_vm_number_string">+31654501233</string>
     </carrier_config>
     <carrier_config gid1="BAE0000000000000">
         <boolean name="allow_adding_apns_bool" value="false" />
         <boolean name="broadcast_emergency_call_state_changes_bool" value="true" />
         <string name="carrier_eri_file_name_string">eri_311480.xml</string>
         <int name="carrier_default_wfc_ims_mode_int" value="1"/>
+        <string name="default_vm_number_string">*86</string>
         <string-array name="carrier_data_call_permanent_failure_strings" num="14">
             <item value="OPERATOR_BARRED" />
             <item value="MISSING_UNKNOWN_APN" />