Issue #3027 Change the way how indices with storage usage is peeking during billing calculation #3110
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Related to #3027
Previously billing agent uses index name pattern to match all indices in elasticsearch with particular name, like
*cp-s3-file-1
.Such approach may lead to incorrect billing data calculation if there are more that 1 index for such pattern.
This PR adds logic to firstly check if we actually have an alias for such index and if we have - use an index attached to this alias.
In case we don't have an alias or there is no indices attached we will use previous approach.