shellcheck reports SC2086 in test-metrics.sh

[nhudson]

What happened?

shellcheck was updated today and is now reporting that the chart/scripts/test-metrics.sh script failing on SC2086.

Looks like the update to the github action this morning is now showing this as a failure code.

Notice: ./chart/scripts/test-metrics.sh:50:6: note: Double quote to prevent globbing and word splitting. [SC2086]
Notice: ./chart/scripts/test-metrics.sh:53:6: note: Double quote to prevent globbing and word splitting. [SC2086]
Notice: ./chart/scripts/test-metrics.sh:56:6: note: Double quote to prevent globbing and word splitting. [SC2086]

Did you expect to see something different?

I would expect it to not fail

How to reproduce it (as minimally and precisely as possible):

run shellcheck against the chart/scripts/test-metrics.sh script

[paulfantom]

Fixed in 20.0.0 release.