apns: Update H2O Wireless for LTE

New H2O Wireless APN to allow LTE is PRODATA, not att.mvno
New settings were copied from 
http://easygo.h2owirelessnow.com/easygo/images/english/APN_SETTING-2014.pdf.

Change-Id: Ic09f9c9a8db90877fa2842d076762a14bdf154ca

prebuilt/common/etc/apns-conf.xml

@@ -1459,7 +1459,7 @@
   <apn carrier="Straight Talk" mcc="310" mnc="410" apn="tfdata" port="80" mmsc="http://mms-tf.net" mmsproxy="mms3.tracfone.com" mmsport="80" mvno_type="gid" mvno_match_data="deff" type="default,mms,supl" />
   <apn carrier="Red Pocket" mcc="310" mnc="410" apn="PRODATA" port="" mmsc="http://mmsc.mobile.att.net" mmsproxy="proxy.mobile.att.net" mmsport="80" mvno_type="gid" mvno_match_data="4201" type="default,mms,supl" />
   <apn carrier="Black Wireless" mcc="310" mnc="410" apn="att.mvno" proxy="66.209.11.33" port="80" mmsc="http://mmsc.cingular.com" mmsproxy="66.209.11.33" mmsport="80" type="default,mms,supl,agps,fota" authtype="1" />
-  <apn carrier="H2O Wireless" mcc="310" mnc="410" apn="att.mvno" proxy="66.209.11.33" port="80" mmsc="http://mmsc.cingular.com" type="default,mms,supl" />
+  <apn carrier="H2O Wireless" mcc="310" mnc="410" apn="PRODATA" mmsc="http://mmsc.mobile.att.net" mmsproxy="proxy.mobile.att.net" mmsport="80" type="default,mms,supl" />
   <apn carrier="Pure Talk USA" mcc="310" mnc="410" apn="att.mvno" proxy="" port="" mmsc="http://mmsc.cingular.com" mmsproxy="proxy.mvno.telrite.com" mmsport="80" type="default,mms,supl" />
   <apn carrier="AirVoice Wireless" mcc="310" mnc="410" apn="att.mvno" proxy="66.209.11.33" port="80" mmsc="http://mmsc.cingular.com" mmsproxy="66.209.11.33" mmsport="80" type="default,mms,supl" />
   <apn carrier="Jolt Mobile" mcc="310" mnc="410" apn="att.mvno" proxy="66.209.11.33" port="80" mmsc="http://mmsc.cingular.com" mmsproxy="66.209.11.33" mmsport="80" type="default,mms,supl" />