Add carrierconfigs to treat mdn as VM number

Add the carrier configs which specify whether the carrier treats the mdn
as an additional voicemail number.

Change-Id: I9bc095427564cf587734fd2d308a88abc7d88891
Fix: 29145323
Test: build and flash on device
diff --git a/assets/carrier_config_20404.xml b/assets/carrier_config_20404.xml
index 5d9697a..9a1e46d 100644
--- a/assets/carrier_config_20404.xml
+++ b/assets/carrier_config_20404.xml
@@ -8,6 +8,7 @@
     </carrier_config>
     <carrier_config gid1="BAE0000000000000">
         <boolean name="sms_requires_destination_number_conversion_bool" value="true" />
+        <boolean name="mdn_is_additional_voicemail_number_bool" value="true" />
         <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>
diff --git a/assets/carrier_config_310004.xml b/assets/carrier_config_310004.xml
index db112f8..381797d 100644
--- a/assets/carrier_config_310004.xml
+++ b/assets/carrier_config_310004.xml
@@ -2,6 +2,7 @@
 <carrier_config_list>
     <carrier_config>
         <boolean name="sms_requires_destination_number_conversion_bool" value="true" />
+        <boolean name="mdn_is_additional_voicemail_number_bool" value="true" />
         <boolean name="operator_selection_expand_bool" value="true" />
         <int name="aliasMinChars" value="2" />
         <int name="smsToMmsTextThreshold" value="7" />
diff --git a/assets/carrier_config_311480.xml b/assets/carrier_config_311480.xml
index 3ed714e..a379f68 100644
--- a/assets/carrier_config_311480.xml
+++ b/assets/carrier_config_311480.xml
@@ -4,6 +4,7 @@
         <boolean name="carrier_volte_provisioned_bool" value="true" />
         <boolean name="allow_hold_in_ims_call" value="false" />
         <boolean name="sms_requires_destination_number_conversion_bool" value="true" />
+        <boolean name="mdn_is_additional_voicemail_number_bool" value="true" />
         <boolean name="carrier_vt_available_bool" value="true" />
         <boolean name="support_downgrade_vt_to_audio_bool" value="false" />
         <boolean name="notify_handover_video_from_wifi_to_lte_bool" value="true" />