get_latest_lease() function in CloudStack datasource does not match with lease filenames on fedora 25

[Loek]

The get_latest_lease() in cloud-init's CloudStack datasource does not match fedora 25's dhcp lease file names;

The file cloudinit/sources/DataSourceCloudStack.py in Fedora 25;

    for file_name in lease_files:
        if file_name.startswith("dhclient.") and \
           (file_name.endswith(".lease") or file_name.endswith(".leases")):

The file cloudinit/sources/DataSourceCloudStack.py in Fedora 24;

    for file_name in lease_files:
        if file_name.endswith(".lease") or file_name.endswith(".leases"):

Lease file names as specified in /etc/sysconfig/network-scripts/network-functions on Fedora 25;

generate_lease_file_name () {
    local ver=$1
    LEASEFILE="/var/lib/dhclient/dhclient$ver-${DEVICE}.leases"
    if [ -f $LEASEFILE ]; then
         return
    fi
    LEASEFILE="/var/lib/dhclient/dhclient$ver-${UUID}-${DEVICE}.lease"
}

Cloud-init matches filenames starting with 'dhclient.' but the actual filename starts with 'dhclient-'.

[Chad Smith (chad.smith)]

Fixed per this bug https://bugs.launchpad.net/cloud-init/+bug/1717147