Correct storage rebalance script rubocop linting
In support of #26 (closed), get rubocop passing for scripts/storage_rebalance.rb
.
This commit will also support the specification of projects to migrate by one or more given project id
identifiers, and also by a csv file list. So long as the project.repository_storage
is the same as the specified source --current-file-server
then only projects given by the command line argument --project=PROJECT_ID,...
will be replicated to the given destination, --target-file-server
.