Add 'portal_net' parameter to pillar

In preparation for #1402.

cluster/vsphere/config-default.sh

@@ -30,3 +30,5 @@ MINION_NAMES=($(eval echo ${INSTANCE_PREFIX}-minion-{1..${NUM_MINIONS}}))
 MINION_IP_RANGES=($(eval echo "10.244.{1..${NUM_MINIONS}}.0/24"))
 MINION_MEMORY_MB=2048
 MINION_CPU=1
+
+PORTAL_NET="10.244.240.0/20"

cluster/vsphere/config-test.sh

@@ -30,3 +30,5 @@ MINION_NAMES=($(eval echo ${INSTANCE_PREFIX}-minion-{1..${NUM_MINIONS}}))
 MINION_IP_RANGES=($(eval echo "10.244.{1..${NUM_MINIONS}}.0/24"))
 MINION_MEMORY_MB=1024
 MINION_CPU=1
+
+PORTAL_NET="10.244.240.0/20"

cluster/vsphere/templates/salt-master.sh

@@ -30,6 +30,7 @@ EOF
 
 cat <<EOF >/srv/pillar/cluster-params.sls
 node_instance_prefix: $NODE_INSTANCE_PREFIX
+portal_net: $PORTAL_NET
 EOF
 
 # Auto accept all keys from minions that try to join

cluster/vsphere/util.sh

@@ -290,6 +290,7 @@ function kube-up {
     echo "cd /home/kube/cache/kubernetes-install"
     echo "readonly MASTER_NAME='${MASTER_NAME}'"
     echo "readonly NODE_INSTANCE_PREFIX='${INSTANCE_PREFIX}-minion'"
+    echo "readonly PORTAL_NET='${PORTAL_NET}'"
     echo "readonly SERVER_BINARY_TAR='${SERVER_BINARY_TAR##*/}'"
     echo "readonly SALT_TAR='${SALT_TAR##*/}'"
     echo "readonly MASTER_HTPASSWD='${htpasswd}'"