This updates the following modules to support check_mode:
* apt_key
* apt_repository
* easy_install
* pip - will always report changed due to the way it handles state
* seboolean
* selinux
* slurp - since nothing changes, it just adds that it supports
check_mode
* subversion - reports changed when checking out new repo and
when updating.
* supervisorctl
* svr4pkg
See issue #2114.
* improves error handling and reporting
* uses run_command to reduce code
* fails quicker on errors as opposed to return codes and tracebacks
* can now also specify the key as data versus needing to wget it from a file
Pretty straightforward. Give it a URL with an exported GPG key for signing an
Apt repository. It downloads it and will install it using apt-key. It's even
smart enough to tell if it's already there (i.e. actually tells you if it
changed or not).
