add curl to support container probes with mTLS

[danfromtitan]

trafficstars

What this PR does: Adds curl to the container image.

Which issue(s) this PR fixes: Fixes #4427

Checklist

• [-] Tests updated
• [-] Documentation added
• [x] CHANGELOG.md updated - the order of entries should be [CHANGE], [FEATURE], [ENHANCEMENT], [BUGFIX]

[bboreham]

I prefer not to do this; see https://github.com/cortexproject/cortex/issues/4427#issuecomment-972707651

[danfromtitan]

I replied with more details in https://github.com/cortexproject/cortex/issues/4427#issuecomment-973058351 Until kubernetes adds support for client TLS http-get probes, I don't see any other option to probe Cortex containers with mTLS enabled.

[nschad]

I replied with more details in #4427 (comment) Until kubernetes adds support for client TLS http-get probes, I don't see any other option to probe Cortex containers with mTLS enabled.

I concur. I don't think there is another way currently unfortunately since kubelet always skips cert validation when using https

[stale[bot]]

This issue has been automatically marked as stale because it has not had any activity in the past 60 days. It will be closed in 15 days if no further activity occurs. Thank you for your contributions.

[danfromtitan]

still needed

[stale[bot]]

This issue has been automatically marked as stale because it has not had any activity in the past 60 days. It will be closed in 15 days if no further activity occurs. Thank you for your contributions.