prepare net, subnet, vpc for oepnlab jobs running

prepare_net_subnet_vpc.sh

#!/bin/bash

_NET_PREFIX="openlab-jobs"
export OS_NETWORK_NAME="$_NET_PREFIX-net"
export OS_NETWORK_ID="$(openstack network show $OS_NETWORK_NAME -f value -c id)"
if [ -z "$OS_NETWORK_ID" ]; then
    export OS_NETWORK_ID="$(openstack network create $OS_NETWORK_NAME -f value -c id)"
    openstack subnet create --network $OS_NETWORK_ID --subnet-range 172.16.10.0/24 $_NET_PREFIX-subnet
fi

export OS_VPC_ID="$(openstack router show $_NET_PREFIX-vpc -f value -c id)"
if [ -z "$OS_VPC_ID" ]; then
    export OS_VPC_ID="$(openstack router create $_NET_PREFIX-vpc -f value -c id)"
    openstack router add subnet $_NET_PREFIX-vpc $_NET_PREFIX-subnet
fi