Ability to overwrite base url in actions/cache

[sindrig]

As ACTIONS_CACHE_URL cannot be overwritten in actions/cache, provide the ability to overwrite it using GITHUB_ACTIONS_CACHE_URL.

See https://github.com/actions/cache/pull/679 for more context

[yaananth]

@actions/actions-cache for review here

[semihural-tomtom]

@sindrig any idea who should review this? @bishal-pdMSFT ?

[fkorotkov]

For anyone interested we now maintain a daily updated fork where we monkey patch minimized JavaScript of the action to include a similar patch. Please check out https://github.com/cirruslabs/cache

[sindrig]

@sindrig any idea who should review this? @bishal-pdMSFT ?

No idea. I'm not using this anymore (my old team might be) so I'm not invested in getting this in. I've stopped using actions/cache partly because of this.

Anyway, I've resolved the conflicts and keeping this open until it gets any response.