Fixes #26590 - Rename template snippets

Rename provisioning template snippets to not start with '_' as rails
template partials. This will match better, what we see in
community-templates, and will allow to do a directory comparison via diff.

Script used:...

templates - sync from community-templates

Fixes #26617 - Properly expose puppetclass_name

fixes #26554 - move class_edit to webpack.

this is a pure move + lint, no code changes introduced.

Fixes #26609 - TopbarSweeper caching empty div

Revert "Fixes #19731 - V2 API ping call"

This reverts commit f6de8e1da99ffb667f2c04d78ed4e6696e828c18.

Breaks Katello, too close to branching 1.22

Fixes #19731 - V2 API ping call

Fixes #26569 - add hypervisor name

Fixes #26564 - show OS on vmware VMs listing

Fixes #26543 - make generate_at a datetime field (#6653)