Set eviction-hard for vagrant cluster

cluster/vagrant/config-default.sh

@@ -115,3 +115,6 @@ E2E_STORAGE_TEST_ENVIRONMENT=${KUBE_E2E_STORAGE_TEST_ENVIRONMENT:-false}
 
 # Default fallback NETWORK_IF_NAME, will be used in case when no 'VAGRANT-BEGIN' comments were defined in network-script
 export DEFAULT_NETWORK_IF_NAME="eth0"
+
+# Evict pods whenever compute resource availability on the nodes gets below a threshold.
+EVICTION_HARD="${EVICTION_HARD:-memory.available<100Mi,nodefs.available<10%}"

cluster/vagrant/config-test.sh

@@ -26,3 +26,6 @@ REGISTER_MASTER_KUBELET=${REGISTER_MASTER:-false}
 
 # Optional: if set to true, kube-up will configure the cluster to run e2e tests.
 E2E_STORAGE_TEST_ENVIRONMENT=${KUBE_E2E_STORAGE_TEST_ENVIRONMENT:-false}
+
+# Evict pods whenever compute resource availability on the nodes gets below a threshold.
+EVICTION_HARD="${EVICTION_HARD:-memory.available<100Mi,nodefs.available<10%}"

cluster/vagrant/provision-utils.sh

@@ -78,6 +78,12 @@ opencontrail_public_subnet: '$(echo "$OPENCONTRAIL_PUBLIC_SUBNET" | sed -e "s/'/
 e2e_storage_test_environment: '$(echo "$E2E_STORAGE_TEST_ENVIRONMENT" | sed -e "s/'/''/g")'
 EOF
 
+if [ -n "${EVICTION_HARD:-}" ]; then
+  cat <<EOF >>/srv/salt-overlay/pillar/cluster-params.sls
+eviction_hard: '$(echo "${EVICTION_HARD}" | sed -e "s/'/''/g")'
+EOF
+fi
+
   cat <<EOF >/etc/salt/minion.d/log-level-debug.conf
 log_level: warning
 log_level_logfile: warning

cluster/vagrant/util.sh

@@ -188,6 +188,7 @@ function echo-kube-env() {
   echo "OPENCONTRAIL_PUBLIC_SUBNET='${OPENCONTRAIL_PUBLIC_SUBNET:-}'"
   echo "E2E_STORAGE_TEST_ENVIRONMENT='${E2E_STORAGE_TEST_ENVIRONMENT:-}'"
   echo "CUSTOM_FEDORA_REPOSITORY_URL='${CUSTOM_FEDORA_REPOSITORY_URL:-}'"
+  echo "EVICTION_HARD='${EVICTION_HARD:-}'"
 }
 
 function verify-cluster {