[Merge] lp:~jibel/ubuntu/trusty/ubuntu-release-upgrader/dont_fail_if_no_apport into lp:ubuntu/ubuntu-release-upgrader

[Jean-Baptiste Lallement]

Thanks for the review. It makes sense to change it the way you suggest. Feel free to work.
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https://code.launchpad.net/~jibel/ubuntu/trusty/ubuntu-release-upgrader/dont_fail_if_no_apport/+merge/208550
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