APN Configurations for countries (UG,GH,SN,CI,CD)

Updated APN settings for UG (Airtel, MTN, UTL, Warid Telecom),
GH (MTN, Vodafone, Tigo, Airtel, Glo), SN (Tigo, Expresso),
CI (Moov, Orange, Koz, MTN), CD (Tigo).
Signed-off-by: Tangus Koech <tangus@google.com>

Change-Id: I74608d66447c1a7bf40270e1e0382b07133aec85

Conflicts:
	etc/apns-full-conf.xml