Merge branch 'fix-avs-metric-labels' into 'master'

Huawei.MA5600T.get_metrics. Fix labels format.

See merge request !6334

(cherry picked from commit 28620cc8)

e5d1ff10 Huawei.MA5600T.get_metrics. Fix labels format.
6 jobs for !6335 with cherry-pick-28620cc8 in 15 minutes and 27 seconds (queued for 8 seconds)
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