Added some log in APT setup.

23.Initialize_APT/0_setup.sh

@@ -3,7 +3,7 @@ source /root/envsetup/conf.sh
 
 # migrate to Ubuntu 16.04 / apply sources.list
 if ( rgrep '14.04' /etc/lsb-release >/dev/null ); then
-	# upgrade to Ubuntu 16.04
+	echo "Upgrading to Ubuntu 16.04."
 	apt-get update
 	apt-get dist-upgrade -y
 	cp sources16.list /etc/apt/sources.list
@@ -12,7 +12,7 @@ if ( rgrep '14.04' /etc/lsb-release >/dev/null ); then
 	apt-get install -f -y
 	apt-get dist-upgrade -y
 else
-	# Ubuntu 16.04
+	echo "Updating Ubuntu 16.04 sources.list."
 	cp sources16.list /etc/apt/sources.list
 fi
 
@@ -23,15 +23,18 @@ apt-get install -y aptitude apt-transport-https
 
 # modify sources.list to use ubicast cache
 if ( ! grep ${APT_CACHE_HOST} /etc/apt/sources.list ); then
+	echo "Updating sources.list to use cache ${APT_CACHE_HOST}."
 	sed -i "s@http://@http://${APT_CACHE_HOST}/@" /etc/apt/sources.list
 fi
 
 # APT panel
+echo "Adding skyreach.list to APT sources."
 wget -q "https://${SKYREACH_HOST}/media/public.gpg" -O- | sudo apt-key add -
 echo "deb https://${SKYREACH_HOST} packaging/apt/${SKYREACH_API_KEY}/" > /etc/apt/sources.list.d/skyreach.list
 apt-get update
 
 # unattended-upgrades
+echo "Installing and configuring unattended-upgrades."
 apt-get install -y unattended-upgrades
 sed -i 's@//Unattended-Upgrade::Mail "root";@Unattended-Upgrade::Mail "root";@' /etc/apt/apt.conf.d/50unattended-upgrades
 sed -i 's@//*.*"vim";@"mysql-server";@' /etc/apt/apt.conf.d/50unattended-upgrades