Adding local ssh option to Capistrano task - ruby

Question

I have a Capistrano deployment script that exports my local database to a remote server and vice versa.
Here is one such task...
desc "Imports the remote database into your local environment"
task :pull do
# Create dump of remote db
invoke 'db:backup'
on roles(:app) do
run_locally do
# Create dump of current local db
execute "mysqldump -u #{fetch(:local_db_user)} -p#{fetch(:local_db_password)} #{fetch(:local_db_name)} > #{fetch(:local_backup_file)}"
# Import remote db into local
execute "mysql -u #{fetch(:local_db_user)} -p#{fetch(:local_db_password)} #{fetch(:local_db_name)} < db_backups/#{fetch(:curr_stage)}/#{fetch(:backup_filename)}.sql"
end
end
Rake::Task['db:cleanup_local'].execute
end
However I'm running a virtual host (Vagrant box) locally so to do local database tasks need to SSH into it.
What I want to do is add an option in the Capistrano options that if present will add something like ssh vagrant#192.168.10.10 to the start of the mysqldump and mysql commands and if it's not defined not add anything.
So I would want my local database connection details to look something like
set :local_db_host, "127.0.0.1"
set :local_db_name, "database_dev"
set :local_db_user, "homestead"
set :local_db_password, "secret"
set :local_ssh, "vagrant#192.168.10.10"
How could I add this option within the Capistrano task in a tidy way? Much thanks for any help.