fix: add and set ENABLE_KEEP_VM_IP=true to keep vm ip (#1702)

dist/images/install.sh

@@ -19,6 +19,7 @@ CNI_CONFIG_PRIORITY=${CNI_CONFIG_PRIORITY:-01}
 # exchange link names of OVS bridge and the provider nic
 # in the default provider-network
 # EXCHANGE_LINK_NAME=${EXCHANGE_LINK_NAME:-false}
+ENABLE_KEEP_VM_IP=${ENABLE_KEEP_VM_IP:-true}
 # The nic to support container network can be a nic name or a group of regex
 # separated by comma, if empty will use the nic that the default route use
 IFACE=${IFACE:-}
@@ -2581,6 +2582,7 @@ spec:
           - --alsologtostderr=true
           - --log_file=/var/log/kube-ovn/kube-ovn-controller.log
           - --log_file_max_size=0
+          - --keep-vm-ip=$ENABLE_KEEP_VM_IP
           env:
             - name: ENABLE_SSL
               value: "$ENABLE_SSL"