Code review comment for ~alexmurray/ubuntu-security-tools:umt-grep-source-map

Overall it looks good to me, but I'm just wondering if we need to do source_map.load() without skipping eol releases. Here's an example

In current UST master:
$ umt grep ffmpeg
ffmpeg
ffmpeg-php
ffmpeg2theora
ffmpegfs
ffmpegthumbnailer
ffmpegthumbs
gstreamer0.10-ffmpeg
kffmpegthumbnailer
kodi-inputstream-ffmpegdirect
ocaml-ffmpeg

with your changes applied:
$ umt grep ffmpeg
ffmpeg
ffmpeg2theora
ffmpegfs
ffmpegthumbnailer
ffmpegthumbs
kffmpegthumbnailer
kodi-inputstream-ffmpegdirect
ocaml-ffmpeg

You can see that ffmpeg-php and gstreamer0.10-ffmpeg.
I did a grep on ffmpeg-php, this is a precise source, so not sure it matters at all.
I did the same for gstreamer0.10-ffmpeg, this is a precise and trusty source, since trusty is still in ESM, should we list trusty source on umt grep?

If yes, then doing a source_map.load(skip_eol_releases=False) might be enough.