Modify APNs for Truphone

Add a new APN to device/sample/etc/apns-full-conf.xml for new mcc/mnc assigned to Truphone

<apn carrier="Truphone"
	mcc="505"
	mnc="38"
	apn="truphone.com"
	type="default,supl"
/>

Changes tested on nexus and pixel phones. APN settings working correctly.

Test: On a rooted device added the settings above in the apns file
Test: Reset the APN settings
Test: Inserted Truphone SIM with the new MCC/MNC
Test: Verified that the APN was automatically populated with the truphone.com APN
Test: Verified that the data sessions were automatically configured

Change-Id: I4762efe7b62161378ff4009fcc0d4173aa731862
Signed-off-by: Igor Borisoglebski <igorborisoglebski@gmail.com>