When the linux logrotate system rename the runbot logfile used by the
new builder script, the script continue to write in the reotated file.
With this commit, the WatchedFileHandler is used. This handler is
specialy crafted to handle this situation, it detects the file renaming
and automatically changes to the new file that have the old filename.
* If an excpetion occurs during the main loop, the builder crashes. With
this commit, the main_loop is in a try/catch.
Also:
* remove unused imports
* move the first log after the Odoo import because Odoo changes the
process timezone to UTC
Actually, when deploying multiple instances of runbot, a full odoo
installation is needed.
With this commit, a single standalone (sort of) can be used to start a
runbot builder. It uses the same database as the runbot scheduler.
This script just reserve pending builds for himself and starts to build.
This is just a proof of concept. It should work alongside with a
standard runbot installation.
