[Merge] lp:~binli/ubuntu/trusty/modemmanager/lp1441095 into lp:ubuntu/trusty/modemmanager

[Bin Li]

Review: Resubmit

@Iain, @Seb128,

 I have done for trusty and wily. Thanks!
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https://code.launchpad.net/~binli/ubuntu/trusty/modemmanager/lp1441095/+merge/255935
Your team Ubuntu branches is requested to review the proposed merge of lp:~binli/ubuntu/trusty/modemmanager/lp1441095 into lp:ubuntu/trusty/modemmanager.