Skipping facts not available in AIX WPARs
Merge pull request #3307 from mplonka/release1.2

Skipping facts not available in AIX WPARs
Makes host key checking the default behavior but can be disabled in ansible.cfg or by environment variable.
Merge
Example config file should use correct config setting.
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.
Improve interlaced output prevention when asking for host key approval.
Update the changelog
Update packaging changelogs.
Update release versions for 1.2.1
Update the releases list.
Fix the comment.
Make it possible to tell paramiko to not record new host keys, which can be slow with a large number of hosts.
-c ssh is preferred in most cases if you have ControlPersist available, otherwise if you are comfortable you
can turn off recording while leaving host key checking on, etc.
Release bump
Update changelogs
Update releases