Update ansible to 1.4.1.

Some changes:
* Many new modules, sorted in the following subdirs:
  cloud commands database files internal inventory messaging
  monitoring net_infrastructure network notification packaging
  source_control system utilities web_infrastructure
* accelerated mode: An enhanced fireball mode that requires zero
  bootstrapping and fewer requirements plus adds capabilities like
  sudo commands
* Connection default is now "smart", which discovers if the system
  openssh can support ControlPersist, and uses it if so, if not
  falls back to paramiko
* external inventory scripts may now return host variables in one
  pass, which allows them to be much more efficient for large numbers
  of hosts (AWS!)
* "~" now expanded on each component of configured plugin paths
* Countless feature enhancements and bugfixes

For a full list, see https://github.com/ansible/ansible/blob/devel/CHANGELOG.md

(hubertf)