prebuilt: Update APNs for Boost Mobile

Removed "Boost Mobile CdmaNai" apn as the mmsc domain
mm.myboostmobile.com does not resolve and the only other US network
offered by Boost has a different mmsc
(http://wholesale.mmsmvno.com/mms/wapenc).
https://www.boostmobile.com/support/activation/finish-activation

Change-Id: I203fe6ca705fc2b8eacf954dff843a749bcc6959

prebuilt/common/etc/apns-conf.xml

@@ -1310,7 +1310,7 @@
   <apn carrier="Sprint LTE internet" mcc="310" mnc="120" apn="n.ispsn" type="default,mms,supl,hipri,dun" mmsc="http://mms.sprintpcs.com" mmsproxy="68.28.31.7" mmsport="80" protocol="IPV4V6" roaming_protocol="IPV4V6" bearer="14" />
   <apn carrier="Sprint EHRPD internet" mcc="310" mnc="120" apn="n.ispsn" type="default,mms,supl,hipri" mmsc="http://mms.sprintpcs.com" mmsproxy="68.28.31.7" mmsport="80" protocol="IPV4V6" roaming_protocol="IPV4V6" bearer="13" />
   <apn carrier="Sprint internet" mcc="310" mnc="120" apn="n.ispsn" type="mms,supl,hipri" mmsc="http://mms.sprintpcs.com" mmsproxy="68.28.31.7" mmsport="80" protocol="IPV4V6" roaming_protocol="IPV4V6" />
-  <apn carrier="Boost" mcc="310" mnc="120" apn="cinet.spcs" type="supl,mms,dun,fota" mmsc="http://mm.myboostmobile.com" mmsproxy="68.28.31.7" mmsport="80" protocol="IPV4V6" roaming_protocol="IPV4V6" />
+  <apn carrier="Boost Mobile" mcc="310" mnc="410" apn="ereseller" mmsc="http://mmsc.mobile.att.net" mmsproxy="proxy.mobile.att.net" mmsport="80" type="default,mms,supl,fota,xcap" protocol="IPV4V6" roaming_protocol="IPV4V6" mvno_match_data="3432" mvno_type="gid" />
   <apn carrier="Credo Mobile" mcc="310" mnc="120" apn="n.w1.ispsn" type="mms" mmsc="http://mms.plspictures.com" mmsproxy="68.28.31.7" mmsport="80" protocol="IPV4V6" roaming_protocol="IPV4V6" />
   <apn carrier="Ting" mcc="310" mnc="120" apn="n.t8.ispsn" type="default,supl,mms" mmsc="http://mms.plspictures.com" mmsproxy="68.28.31.7" mmsport="80" protocol="IPV4V6" roaming_protocol="IPV4V6" />
   <apn carrier="Ringplus" mcc="310" mnc="120" apn="n.r5.ispsn" type="supl,mms" mmsc="http://mms.plspictures.com" mmsproxy="68.28.31.7" mmsport="80" protocol="IPV4V6" roaming_protocol="IPV4V6" />
@@ -1642,7 +1642,6 @@
   <apn carrier="MetroPCS IMS" mcc="311" mnc="660" apn="ims.metropcs" user="" password="" type="ims" authtype="0" mmsc="http://mms.metropcs.net:3128/mmsc" protocol="IP" roaming_protocol="IP" bearer="14" />
   <apn carrier="ATT WAP" mcc="311" mnc="680" apn="wap.cingular" proxy="wireless.cingular.com" port="80" mmsc="http://mmsc.cingular.com" mmsproxy="wireless.cingular.com" mmsport="80" type="default,mms" />
   <apn carrier="ATT Broadband" mcc="311" mnc="680" apn="Broadband" type="default,supl" />
-  <apn carrier="Boost Mobile CdmaNai" mcc="311" mnc="870" apn="CdmaNai" mmsproxy="68.28.31.7" mmsport="80" mmsc="http://mm.myboostmobile.com" type="mms" carrier_enabled="false" protocol="IPV4V6" roaming_protocol="IPV4V6" bearer="6" />
   <apn carrier="ATT WAP" mcc="311" mnc="980" apn="wap.cingular" proxy="wireless.cingular.com" port="80" mmsc="http://mmsc.cingular.com" mmsproxy="wireless.cingular.com" mmsport="80" type="default,mms" />
   <apn carrier="ATT Broadband" mcc="311" mnc="980" apn="Broadband" type="default,supl" />
   <apn carrier="Sprint CdmaNai" mcc="312" mnc="530" apn="CdmaNai" mmsproxy="68.28.31.7" mmsport="80" mmsc="http://mms.sprintpcs.com" type="mms" carrier_enabled="false" protocol="IPV4V6" roaming_protocol="IPV4V6" bearer="6" />