[CI:DOCS] feat: add insecure registry troubleshooting solution

[fatelei]

Does this PR introduce a user-facing change?

Just update troubleshooting docs #13039, no other change.

update troubleshooting for resolving insecure registry.

[rhatdan]

Thanks @fatelei
@TomSweeneyRedHat @vrothberg PTAL

[edsantiago]

This is literally issue number four:

podman/troubleshooting.md

Line 95 in c9c5cb2

### 4) http: server gave HTTP response to HTTPS client

[edsantiago]

New commit is in the wrong place. It also includes bad data. And, I'm sorry, but it does not parse; needs language fixes. I'll try to make time later today to offer suggestions, but right now this must not merge.

[edsantiago]

Suggestion:

For a global workaround: as root[1], create the file `/etc/containers/registries.conf.d/registry-NAME.conf` (replacing NAME with the name of this registry) with the following content:
...
location = "FULLY.QUALIFIED.NAME.OF.REGISTRY"
...
 [1] If you are using ...

Reasons:

• make it 100% clear that this is a root action
• give early warning (via footnote) of how to do this on Windows/Mac
• make it clear (still not 100%, but better) that NAME and FULLY.QUALIFIED.NAME are strings that must be replaced by the end user, and not copy-pasted
• there really is no need for a cd, nor for two steps. It is more understandable as a single file path.

Thank you!

[fatelei]

make it simple

[TomSweeneyRedHat]

LGTM
@edsantiago WDYT?

[openshift-ci]

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[edsantiago]

LGTM. Thank you for your patience, @fatelei. @containers/podman-maintainers PTAL.

[TomSweeneyRedHat]

Thanks again @fatelei , very nice work!
/lgtm