Move default's salt from 2016.3 -> 2017.7

Change-Id: I55a3b4ac90ece40c5ec3a9656bb607307f3a4905
diff --git a/debian-8/scripts/salt.sh b/debian-8/scripts/salt.sh
index 4261885..aa467d2 100644
--- a/debian-8/scripts/salt.sh
+++ b/debian-8/scripts/salt.sh
@@ -1,5 +1,5 @@
-wget -O - https://repo.saltstack.com/apt/debian/8/amd64/2016.3/SALTSTACK-GPG-KEY.pub | sudo apt-key add -
-echo "deb http://repo.saltstack.com/apt/debian/8/amd64/2016.3 jessie main" >/etc/apt/sources.list.d/saltstack.list
+wget -O - https://repo.saltstack.com/apt/debian/8/amd64/2017.7/SALTSTACK-GPG-KEY.pub | sudo apt-key add -
+echo "deb http://repo.saltstack.com/apt/debian/8/amd64/2017.7 jessie main" >/etc/apt/sources.list.d/saltstack.list
 apt-get update
 apt-get -y install salt-minion
 mkdir -m700 -p /etc/salt/pki/minion