This introduces an ansible.cfg file.

The only setting configured in this version of the .cfg file is to enable pipelining.

From the docs: Enabling pipelining reduces the number of SSH operations required to execute a module on the remote server. This can result in a significant performance improvement when enabled, however when using "sudo:" you must first disable 'requiretty' in /etc/sudoers

Note: Ubuntu does not 'requiretty' by default in /etc/sudoers.

Stats: for time make update_one mylar: without pipelining 0.79s user 1.58s system 3% cpu 1:13.32 total with pipelining 0.82s user 1.17s system 3% cpu 57.146 total