Switch to cmd array so we can redact

lib/tasks/mrsk/registry.rake

@@ -6,13 +6,13 @@ namespace :mrsk do
   namespace :registry do
     desc "Login to the registry locally and remotely"
     task :login do
-      run_locally             { execute registry.login }
-      on(MRSK_CONFIG.servers) { execute registry.login }
+      run_locally             { execute *registry.login }
+      on(MRSK_CONFIG.servers) { execute *registry.login }
     end
 
     desc "Logout of the registry remotely"
     task :logout do
-      on(MRSK_CONFIG.servers) { execute registry.logout }
+      on(MRSK_CONFIG.servers) { execute *registry.logout }
     end
   end
 end