Fix rubocop

Author: nmaludy

lib/puppet/functions/powercli/hosts_status.rb

@@ -30,7 +30,7 @@ def hosts_status(connection, hosts = nil)
     hosts_hash = JSON.parse(resp[:stdout])
     if hosts
       # only return the hosts that the user asked for
-      hosts_hash.select { |k, v| hosts.include?(k) }
+      hosts_hash.select { |k, _v| hosts.include?(k) }
     else
       hosts_hash
     end