release-19.3:Backport!2569

Merged bee26 requested to merge cherry-pick-d2593dc6 into release-19.3

Fix Eltex.MES.get_inventory script

See merge request !2569 (merged)

(cherry picked from commit d2593dc6)

a748f440 Fix Eltex.MES.get_inventory script 1078dcbb Fix PWR/PSU ecb6bc8d Fix

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