Added APNs for Panamanian Carriers (Movistar PA, Claro PA and Digicel

PA)

Change-Id: I0290cd1d3d61421ab7f02ac4b1372a7ff53b1948

prebuilt/common/etc/apns-conf.xml

@@ -1523,4 +1523,7 @@
   <apn carrier="Movistar UY" mcc="748" mnc="07" apn="apnumt.movistar.com.uy" user="movistar" password="movistar" type="default,supl" />
   <apn carrier="Claro UY" mcc="748" mnc="10" apn="gprs.claro.com.uy" user="ctigpr" password="ctigpr999" type="default,supl" />
   <apn carrier="Claro UY MMS" mcc="748" mnc="10" apn="mms.ctimovil.com.uy" user="ctimms" password="ctimms999" mmsc="http://mms.ctimovil.com.uy" mmsproxy="170.051.255.240" mmsport="9201" type="mms" />
+  <apn carrier="Movistar PA" apn="internet.movistar.pa" user="movistarpa" password="movistarpa" type="default,supl"/>
+  <apn carrier="Claro PA" apn="web.claro.com.pa" user="CLAROWEB" pass="CLAROWEB" type="default,supl" />
+  <apn carrier="Digicel PA" apn="web.digicelpanama.com" type="default,supl"/>
 </apns>