Bug 1069290 - Remove redundant manage.py params from the deploy script

manage.py sets the DJANGO_SETTINGS_MODULE env variable, so it's
unnecessary to pass |--settings ...| when we call it from the Chief
deploy script.
Bug 1069283 - Call manage.py init_datasources during Chief deployment
Bug 1069290 - manage.py should overwrite DJANGO_SETTINGS_MODULE if set
Bug 1070471 - Update example commander settings to mirror production
Bug 1068765 - Add support for mochitest-jetpack & tweak WebGL regex

This adds support for the new Jetpack job which makes use of the
Mochitest harness & adds support for the desktop Web GL jobs
that have a job name that is different from their Android variants.

Treeherder equivalent of:
https://hg.mozilla.org/webtools/tbpl/rev/cac32f935b5d
Bug 1067481 - Adjust build type & VM regex to fix jetpack asan jobs

Jetpack (addon-sdk) asan jobs have the buildername:
"jetpack-fx-team-ubuntu64-asan_vm-opt"

Both the build type of asan and the VM status of the job were not
caught by the previous regex, due to the word separators differing
from those seen on other repositories.