AMBARI-23010. Make solrIndexHelper.sh script to be able to run index migration against a snapshot #381
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What changes were proposed in this pull request?
solr index helper should support to work on snapshots as well
also added debug options to make to log verbose if it required
How was this patch tested?
Manually, create ranger collection (replica) backup, run index migration on that, upgrade solr, then restore the collection
please review @zeroflag @adoroszlai @swagle @kasakrisz