Download of latest locale can fail because we check latest-mozilla-central and not latest-mozilla-central-l10n

[whimboo]

I have seen today that for other locales than en-US we do not correctly check the l10n folder but the general one which only contains en-US builds:

https://archive.mozilla.org/pub/firefox/nightly/latest-mozilla-central/
https://archive.mozilla.org/pub/firefox/nightly/latest-mozilla-central-l10n/

As result a download of a locale will fail if it is not present yet in the build folder from today. This can best be tested when new Nightly builds of Firefox have been produced.

$ mozdownload -t daily --locale ru --platform mac
INFO | Retrieving the build status file from https://archive.mozilla.org/pub/firefox/nightly/latest-mozilla-central/
INFO | Retrieving list of builds from https://archive.mozilla.org/pub/firefox/nightly/2015/11/
Traceback (most recent call last):
File "/home/henrik/.virtualenvs/mozdownload/bin/mozdownload", line 9, in
load_entry_point('mozdownload==1.19', 'console_scripts', 'mozdownload')()
File "/mozilla/code/mozdownload/mozdownload/cli.py", line 167, in cli
build = factory.FactoryScraper(scraper_type, *_kwargs)
File "/mozilla/code/mozdownload/mozdownload/factory.py", line 118, in init
scraper_types[scraper_type].init(self, *_kwargs)
File "/mozilla/code/mozdownload/mozdownload/scraper.py", line 365, in init
Scraper.init(self, _args, *_kwargs)
File "/mozilla/code/mozdownload/mozdownload/scraper.py", line 123, in init
self.get_build_info()
File "/mozilla/code/mozdownload/mozdownload/scraper.py", line 396, in get_build_info
self.date, self.build_index)
File "/mozilla/code/mozdownload/mozdownload/scraper.py", line 481, in get_build_info_for_date
raise errors.NotFoundError(message, url)
mozdownload.errors.NotFoundError: Folder for builds on 2015-11-02-03-02-41 has not been found: https://archive.mozilla.org/pub/firefox/nightly/2015/11/

[whimboo]

Hm, turns out that the https://archive.mozilla.org/pub/firefox/nightly/latest-mozilla-central-l10n/ folder does not have a status file we could use to check for the latest date. Maybe we have to change our code to simply download the files from that URL under those circumstances. It should not be done by default given that the original folder contains more than the binaries.