have `os_server_facts` call `list_servers` rather than `get_server`, and
treat the `server` parameter as a wildcard pattern. This permits one to
get facts on a single server:
- os_server:
server: webserver1
On mutiple servers:
- os_server:
server: webserver*
Or on all servers:
- os_server:
Introduces a `detailed` parameter to request additional server details
at the cost of additional API calls.
* Add python>= 2.6 to documented requirements when a module's deps need
python>= 2.6 so we know when a module can use python2.6+ syntax
* Remove BabyJSON usage
* Change modules to use if __name__ == '__main__' so that they can
potentially be unittested
The BabJSON changes Fixes#1211
