Discovered while working on T217992: Unable to delete "tiles.wmflabs.org" proxy entry via horizon.
These proxies are affected:
sqlite> select name, domain from route join project on route.project_id = project.id where domain like '%.'; maps|wma.wmflabs.org. maps|0.wma.wmflabs.org. maps|1.wma.wmflabs.org. maps|2.wma.wmflabs.org. maps|3.wma.wmflabs.org. maps|4.wma.wmflabs.org. maps|5.wma.wmflabs.org. maps|6.wma.wmflabs.org. maps|7.wma.wmflabs.org. maps|label.wma.wmflabs.org. dumps|dumps-stats.wmflabs.org. tools|tools-checker-via-proxy.wmflabs.org. mwv-apt|mwv-apt.wmflabs.org. mobile|android-builds.wmflabs.org. globaleducation|wikiedubackups.wmflabs.org. visualeditor|togetherjs-hub.wmflabs.org. visualeditor|togetherjs.wmflabs.org. wikilabels|labels-staging.wmflabs.org. design|design-research-methods.wmflabs.org. discourse|discourse.wmflabs.org. deployment-prep|mathoid-beta.wmflabs.org. deployment-prep|restbase-beta.wmflabs.org. deployment-prep|citoid-beta.wmflabs.org. deployment-prep|graphoid-beta.wmflabs.org. deployment-prep|sentry-beta.wmflabs.org. dumps|bugs.wmflabs.org. dumps|dumps-3.wmflabs.org. dumps|dumps-1.wmflabs.org. dumps|dumps-2.wmflabs.org. extdist|extdist-01.wmflabs.org. extdist|extdist.wmflabs.org. math|mathbackend.wmflabs.org. math|math-ru.wmflabs.org. account-creation-assistance|accounts-oauth.wmflabs.org. account-creation-assistance|accounts-dev.wmflabs.org. account-creation-assistance|accounts.wmflabs.org. services|appservice.wmflabs.org. queryrapi|queryr.wmflabs.org. wikimetrics|metrics.wmflabs.org. wikimetrics|metrics-staging.wmflabs.org. phragile|phragile.wmflabs.org. otrs|otrs-oneclickspam.wmflabs.org. dashiki|edit-analysis-test.wmflabs.org. dashiki|language-reportcard-test.wmflabs.org. dashiki|vital-signs-test.wmflabs.org. dashiki|browser-reports-test.wmflabs.org. dashiki|vital-signs.wmflabs.org. dashiki|edit-analysis.wmflabs.org. dashiki|language-reportcard.wmflabs.org. dashiki|browser-reports.wmflabs.org.