execute as sudo in fabric
===

I have a command `service app start-demo` requires me to type `sudo service app start-demo` in the command line.

I used `sudo(service app start-demo)` and `sudo(sudo service app start-demo)` but I still get

Warning: sudo() encountered an error (return code 1) while executing 'sudo service app start-demo'

I have no problem executing that as a command line in a terminal.

I am not sure if `SADeprecationWarning:` counts as a failure to fabric?

Thanks.