Add Jinja2 filter |bool : return boolean interpretation of the value

'yes', 'on', '1', 'true', insensitively, and 1 are true,
 everything else is false
Fix service enable on FreeBSD

Some services have a knob (i.e. rc.conf setting) whose name
differs from that of the script. For example, lockd process
is controlled with a script called lockd, but the rc.conf
value is rpc_lockd_enable.

Fixes issue #3382.
Make the CPU facts Hyperthreading aware
Makes host key checking the default behavior but can be disabled in ansible.cfg or by environment variable.
Example config file should use correct config setting.
Fix git submodule update when version specified
Enable paramiko to ask whether to add keys to known hosts.
Closing stdin too early.
Close the named temporary file.
Lock around SSH connectivity to new hosts in host checking mode such that prompts for host approval
messages do not get interlaced.
Default to 'smart' transport, which will use OpenSSH if it can support ControlPersist.