move troubleshooting out of home menu, into tasks

[Bradamant3]

Finally fixed branch, commit history -- this PR is per a now old-ish conversation in a user-journeys meeting, about fixing up the home page nav and finding a better home for the troubleshooting content. Probably only stage 1 in a multi-stage reorg and rewrite.

---

This change is 

[Bradamant3]

/assign @chenopis @steveperry-53

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[steveperry-53]

/lgtm

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[heckj]

/hold
Put the hold since this also appears to need a rebase, and tide/auto-bot merger is jamming up in these cases. Conflicting file: _data/docs-home.yml
@Bradamant3 feel free to remove hold once rebased, no qualms with the content

[chenopis]

Oops. So I did create a "Troubleshooting" section under the Tasks ToC:

- title: Troubleshooting
  path: /docs/tasks/debug-application-cluster/troubleshooting/

So you will need to resolve the conflict caused by that.

[heckj]

@Bradamant3 👋 needs a rebase at a min - and otherwise wasn't sure about the /hold, but didn't want to drop it without asking you

[zacharysarah]

@Bradamant3 👋 We've migrated the site's framework to Hugo. Please re-open this PR with changes to files in their post-migration location (/content/en/docs/...).