The lock file is (a temporary file) opened in the parent process, whose
open fd is inherited by the workers after fork, and passed down through
the PlayContext. Connection grows lock/unlock methods which can be used
by individual connection plugins.
* now it uses -n to get immediate error if no password is supplied and one is needed,
this should fix the issue with sudo hanging waiting for input.
* made -k configurable, this can break changing become_users in play if left out,
but opens up the possiblity of OTP support.
* added pattern matching to match v1 functionality
* check the task name, not the task+role name for matches
* make sure the input is unicode
Fixes#11692
Also making PlayContext a child class of the Playbook Base class,
which gives it access to all of the FieldAttribute code to ensure
field values are correctly typed after post_validation
Fixes#11381
Abhijit Menon-Sen
Brian Coca
Damian Gerow
Toshio Kuratomi
James Cammarata