feature(resharding before uploading): nodetool refresh - check resharding before uploading
feature(resharding before uploading): nodetool refresh - check resharding before uploading

Refresh procedure is:

put the db files for refresh in the 'upload' folder
run 'nodetool refresh'
refresh command will start resharding
files after resharding are placed into 'upload' folder
move resharded files from 'upload' to main folder

Add the validation to make sure the resharding is performed in the 'upload' folder, not main.

scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests,scylladb/scylla-longevity-tests,scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests,scylladb/scylla-longevity-tests,scylladb/scylla-longevity-tests