Description of problem:

Today the only way to manage the glance cache is to use glance-cache-manage local tool.
This raises several issues:

• No centralised way to manage cache; need to connect to each nodes.
• Requires ssh access and appropriates permissions to the glance cache node(s)

This RFE aims to include basic image cache management into the Glance API.

At a minimum:

• List glance cache nodes
• List cached images on a specific node
• Queue an image for caching on a specific node
• List queued images on a specific node
• Delete an image from the cache queue
• Purge an image from a specific node

Optionally:

• Purge all images from a specific node

Goal is to have feature parity with glance-cache-manage.

Targeted use cases: DCN with or without persistent storage at the edge.

Version-Release number of selected component (if applicable):

16

How reproducible:

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