[Merge] ~phd/ubuntu-dev-tools:phd-backportpackage-option-to-set-epoch into ubuntu-dev-tools:main

[Piotr Henryk Dabrowski]

@Mattia Rizzolo

Epoch numbers may differ between Debian and Ubuntu for some packages [1].

If the epoch in Ubuntu is higher than in Debian,
then backporting even a newer version from Debian
will still not make it preferable for installation.

For this you have to modify the epoch to be equal or greater.

[1] list for 'main': https://pastebin.com/VJqyNNEF

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