Restore the HTML docsbuild cron job

[AA-Turner]

xref:

• One HTML-only cron + one everything-but-HTML cron docs-community#131
• Add --select-output docsbuild-scripts#199

[ewdurbin]

One note: when changing identifier values, we should at least temporarily leave the old ones with a cron.absent state to ensure the old jobs are removed, otherwise they will continue to run.

[AA-Turner]

This is now ready for merge, the required changes in docsbuild-scripts have been made.

A

[ewdurbin]

applied

before:

ee@docs:~$ sudo -u docsbuild crontab -l
# Lines below here are managed by Salt, do not edit
SENTRY_DSN=https://<redacted>@sentry.io/<redacted>
PYTHON_DOCS_ENABLE_ANALYTICS=1
# SALT_CRON_IDENTIFIER:docsbuild-full
7 * * * * /srv/docsbuild/venv/bin/python /srv/docsbuild/scripts/build_docs.py

after:

ee@docs:~$ sudo -u docsbuild crontab -l
# Lines below here are managed by Salt, do not edit
SENTRY_DSN=https://<redacted>@sentry.io/<redacted>
PYTHON_DOCS_ENABLE_ANALYTICS=1
# SALT_CRON_IDENTIFIER:docsbuild-no-html
7 6 * * * /srv/docsbuild/venv/bin/python /srv/docsbuild/scripts/build_docs.py --select-output=no-html
# SALT_CRON_IDENTIFIER:docsbuild-only-html
16 * * * * /srv/docsbuild/venv/bin/python /srv/docsbuild/scripts/build_docs.py --select-output=only-html