Use the following api paths model:

/namespaces/<ns>/<kind>/<name>/<action>

Use a "object / <kind>" pattern for openapi handler tags.

Expose in each object kind section this triplet of handlers:

GET /namespaces/{namespace}/{kind}/{name}
GET /namespaces/{namespace}/{kind}/{name}/config
GET /namespaces/{namespace}/{kind}/{name}/file

New paths:

* /cluster/freeze
* /cluster/unfreeze
* /node/drain

Add:

*  GET /namespaces/{namespace}/{kind}/{name}/instance/logs
*  GET /namespaces/{namespace}/{kind}/{name}/instance/backlogs

Rename:

* GET /object/logs => /instances/logs
* GET /object/backlogs => /instances/backlogs

So the filename shows its instances nature.

They must not require the paths query parm, as the object path
is passed from the path parms.

to POST /namespaces/{namespace}/{kind}/{name}/instance/clear

Use the same handler for different kinds.

Use openapi handler tags to present the handler only in the
supported kinds.