increase number of test VMs from 2 to 3

test/Vagrantfile

@@ -5,7 +5,7 @@ VAGRANTFILE_API_VERSION = "2"
 Vagrant.require_version ">= 1.7.0"
 
 # these ought to match what is in config.sh
-n_machines = 2
+n_machines = 3
 ip_prefix = "192.168.48"
 ip_suffix_base = 10
 

test/config.sh

@@ -12,7 +12,7 @@ fi
 SOURCED_CONFIG_SH=true
 
 # these ought to match what is in Vagrantfile
-N_MACHINES=${N_MACHINES:-2}
+N_MACHINES=${N_MACHINES:-3}
 IP_PREFIX=${IP_PREFIX:-192.168.48}
 IP_SUFFIX_BASE=${IP_SUFFIX_BASE:-10}
 
@@ -26,6 +26,7 @@ fi
 # these are used by the tests
 HOST1=$(echo $HOSTS | cut -f 1 -d ' ')
 HOST2=$(echo $HOSTS | cut -f 2 -d ' ')
+HOST3=$(echo $HOSTS | cut -f 3 -d ' ')
 
 . "$DIR/assert.sh"
 

test/gce.sh

@@ -13,7 +13,7 @@ PROJECT=${PROJECT:-positive-cocoa-90213}
 IMAGE=ubuntu-14-04
 TEMPLATE_NAME="test-template-2"
 ZONE=us-central1-a
-NUM_HOSTS=2
+NUM_HOSTS=3
 SUFFIX=""
 if [ -n "$CIRCLECI" ]; then
 	SUFFIX="-${CIRCLE_BUILD_NUM}-$CIRCLE_NODE_INDEX"