Add configuration option to disable Zeroconf in cloud deployments

[ozer550]

Summary

Adds a ZEROCONF_ENABLED option in options.ini, allowing Zeroconf to be disabled in cloud deployments.

References

closes #10552

Reviewer guidance

Testing checklist

• Contributor has fully tested the PR manually
• If there are any front-end changes, before/after screenshots are included
• Critical user journeys are covered by Gherkin stories
• Critical and brittle code paths are covered by unit tests

PR process

• PR has the correct target branch and milestone
• PR has 'needs review' or 'work-in-progress' label
• If PR is ready for review, a reviewer has been added. (Don't use 'Assignees')
• If this is an important user-facing change, PR or related issue has a 'changelog' label
• If this includes an internal dependency change, a link to the diff is provided

Reviewer checklist

• PR is fully functional
• PR has been tested for accessibility regressions
• External dependency files were updated if necessary (yarn and pip)
• Documentation is updated
• Contributor is in AUTHORS.md

[github-actions]

Build Artifacts

Asset type	Download link
PEX file	kolibri-0.17.0a0.dev0_git.68.g9884df9e.pex
Windows Installer (EXE)	kolibri-0.17.0a0.dev0+git.68.g9884df9e-windows-setup-unsigned.exe
Debian Package	kolibri_0.17.0a0.dev0+git.68.g9884df9e-0ubuntu1_all.deb
Mac Installer (DMG)	kolibri-0.17.0a0.dev0+git.68.g9884df9e.dmg
Android Package (APK)	kolibri-0.17.0a0.dev0+git.68.g9884df9e-0.1.4-debug.apk
TAR file	kolibri-0.17.0a0.dev0+git.68.g9884df9e.tar.gz
WHL file	kolibri-0.17.0a0.dev0+git.68.g9884df9e-py2.py3-none-any.whl

[rtibbles]

Changes make sense, have verified that setting the value to False via an environment variable properly disables the functionality. This is perfectly implemented, and good to go!

[rtibbles]

Oh, except that it was branched from and targeted to develop. Please rebase this work onto release-v0.17.x!

See https://womanonrails.com/git-rebase-onto for details on doing a very precise rebase and not bringing in develop commits.