Enable commas to be used in prometheus labels from release-tools
Context
During #20087 (closed), we realized that due to how the acceptance test in release-tools is set up, we cannot have commas inside of labels. For example here, we cannot have the versions
label be passed in as "16.9, 16.8, 16.7" (even when the commas are escaped \,
). I suspect that it conflicts with how metrics.go
scans for the labels.
This issue is to investigate if there's a way to enable the use of commas for those labels, and implement the fix. If it's possible, let's also change the versions
label to contain commas, like how it is above.