[Bug]: --workload-params not working

[epugh]

Describe the bug

Passing in workload params to have more then 1 shard, and jsut getting 1.

To reproduce

After starting up a three node solr:

docker network create solrcloud-test

 docker run --name solr-node1 -d \
    --network solrcloud-test \
    --publish 8983:8983 \
    --memory 8g \
    "apache/solr-nightly:10.0.0-SNAPSHOT-slim" solr start -f -m 2g --host solr-node1 -p 8983    

 docker run --name solr-node2 -d \
    --network solrcloud-test \
    --publish 8984:8984 \
    --memory 8g \
    "apache/solr-nightly:10.0.0-SNAPSHOT-slim" solr start -f -m 2g --host solr-node2 -z solr-node1:9983 -p 8984        

 docker run --name solr-node3 -d \
    --network solrcloud-test \
    --publish 8985:8985 \
    --memory 8g \
    "apache/solr-nightly:10.0.0-SNAPSHOT-slim" solr start -f -m 2g --host solr-node3 -z solr-node1:9983 -p 8985 

I then start the workload via:

solr-orbit run   --pipeline=benchmark-only   --target-hosts=localhost:8983   --workload=nyc_taxis  --workload-params="bulk_indexing_clients:4,num_shards:2" --kill-running-processes

I see the collection nyc_taxies get deleted and then created, but only with one shard:

Expected behavior

No response

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Host / Environment

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Additional context

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