Move historic metrics files

[nate-double-u]

If we do want to keep the historic metrics files, I think this is a reasonable way to organize them.

Closes #170

/cc @spzala @chalin @ptabor

[chalin]

It makes sense IMHO to relocate the metrics files, but how are they meant to be accessed for the doc versions other than next? I'm not seeing a Generated list of metrics section for the v* metrics pages.

[nate-double-u]

I'm not seeing a Generated list of metrics section for the v* metrics pages.

That's a good point. I'll update this PR with that.

[nate-double-u]

deploy previews:

• https://deploy-preview-171--etcd.netlify.app/docs/v3.4/metrics
• https://deploy-preview-171--etcd.netlify.app/docs/v3.3/metrics
• https://deploy-preview-171--etcd.netlify.app/docs/v3.2/metrics
• https://deploy-preview-171--etcd.netlify.app/docs/v3.1/metrics
• https://deploy-preview-171--etcd.netlify.app/docs/next/metrics

[chalin]

This is a good reorganization! Now that we have metrics files under the corresponding doc version folders, it would make sense to sort the entries (decreasing) on the path number.

This could be handled in another PR, if at all.

[nate-double-u]

Thanks Patrice!

Now that we have metrics files under the corresponding doc version folders, it would make sense to sort the entries (decreasing) on the path number.

This could be handled in another PR, if at all.

I'd like to open a separate issue for resorting the lists -- during my docsy conversion explorations I found that we'll need to rewrite the shortcode that generates the list, so maybe we add resorting to that work?