Fixed minio pool to use required pool name

General MR

Summary

Fixed minio pool to use required pool name

local bigbang run with incoming minio-operator upgrade was sucessful.

bigbang     loki                  20m   True      Helm upgrade succeeded for release logging/logging-loki.v2 with chart loki@6.6.2-bb.7
...
bigbang     loki                   https://repo1.dso.mil/big-bang/product/packages/loki.git                   21m   True    stored artifact for revision 'fix-minio-pool@sha1:560e912b1cce5d481cf343427495ec4385a336e9'

Relevant logs/screenshots

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Linked Issue

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Upgrade Notices

N/A