Description of problem:
Set discovery method in hp-toolbox to Avahi

Version-Release number of selected component:
hplip-3.13.11-4.fc20

Additional info:
reporter:       libreport-2.2.2
cmdline:        /usr/bin/python /usr/bin/hp-setup -u
dso_list:       hplip-gui-3.13.11-4.fc20.x86_64
executable:     /usr/bin/hp-setup
kernel:         3.11.10-301.fc20.x86_64
runlevel:       N 5
type:           Python
uid:            1000

Truncated backtrace:
avahi.py:64:detectNetworkDevices:ValueError: need more than 1 value to unpack

Traceback (most recent call last):
  File "/usr/share/hplip/ui4/setupdialog.py", line 1232, in NextButton_clicked
    self.showDevicesPage()
  File "/usr/share/hplip/ui4/setupdialog.py", line 563, in showDevicesPage
    filter_dict, self.search, net_search=net_search_type)
  File "/usr/share/hplip/base/device.py", line 496, in probeDevices
    detected_devices = avahi.detectNetworkDevices(ttl, timeout)
  File "/usr/share/hplip/base/avahi.py", line 64, in detectNetworkDevices
    key, value = item.split('=')
ValueError: need more than 1 value to unpack

Local variables in innermost frame:
found_devices: {}
p: <subprocess.Popen object at 0x181a7d0>
ip: '192.168.1.134'
ttl: 4
addr6: []
item: '\n'
addr4: [['192.168.1.134', '0']]
details: ['\n']
timeout: 5
res: [(2, 1, 6, '', ('192.168.1.134', 0)), (2, 2, 17, '', ('192.168.1.134', 0)), (2, 3, 0, '', ('192.168.1.134', 0))]
y: {'note': '', 'mac': '', 'num_devices': 1, 'num_ports': 1, 'product_id': '', 'ip': '192.168.1.134', 'hn': 'Jamess-iMac', 'status_code': 0, 'device3': '0', 'device2': '0'}
line: '=;wlo1;IPv4;HP\\032HP\\032Officejet\\032Pro\\0328500\\032A910\\032\\064\\032James\\226\\128\\153s\\032iMac;_printer._tcp;local;Jamess-iMac.local;192.168.1.134;0;\n'
bits: ['=', 'wlo1', 'IPv4', 'HP\\032HP\\032Officejet\\032Pro\\0328500\\032A910\\032\\064\\032James\\226\\128\\153s\\032iMac', '_printer._tcp', 'local', 'Jamess-iMac.local', '192.168.1.134', '0', '\n']
port: '0'