Jordan Lund 7c434ced66 Bug 1251288 - Make sure that debug builds use default update channel, r=rail DONTBUILD
I tested this via running fx_desktop_build.py with and without this patch and
compared self.config:
```
./scripts/fx_desktop_build.py --cfg
configs/builds/releng_base_linux_64_builds.py --custom-build-variant-cfg debug
--branch date --build-pool production --developer-run --dump-config
```
diff -pU 10 logs/localconfig_without_patch.json logs/localconfig_with_patch.json

here is the diff of the above:
http://people.mozilla.org/~jlund/update-channel-self-config.diff

MozReview-Commit-ID: J82rgamohTk

--HG--
extra : source : 9bcdab8d416f0ae3db1bef533f778d08d797f5dd
2016-02-25 13:25:37 -08:00

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