Query DNS before finalizing cloud instances

[michaeljguarino]

There's some lag to externaldns registering for an ingress that could cause user-facing goofiness, just query dns until it resolves to wait for that to dissipate.

Test Plan

existing test still works

Checklist

• If required, I have updated the Plural documentation accordingly.
• I have added tests to cover my changes.
• I have added a meaningful title and summary to convey the impact of this PR to a user.
• I have added relevant labels to this PR to help with categorization for release notes.

[stoat-app]

Easy and customizable dashboards for your build system. Learn more about Stoat ↗︎

Static Hosting

Name	Link	Commit	Status
api-coverage	Visit	05805bb	✅
rtc-coverage	Visit	05805bb	✅
core-coverage	Visit	05805bb	✅
cron-coverage	Visit	05805bb	✅
email-coverage	Visit	05805bb	✅
worker-coverage	Visit	05805bb	✅
api-test-results	Visit	05805bb	✅
graphql-coverage	Visit	05805bb	✅
rtc-test-results	Visit	05805bb	✅
core-test-results	Visit	05805bb	✅
cron-test-results	Visit	05805bb	✅
email-test-results	Visit	05805bb	✅
worker-test-results	Visit	05805bb	✅
graphql-test-results	Visit	05805bb	✅

Job Runtime