Letting it pass would just cause an error later on (no such file found)
so it's better to catch it here and know that we have users dealing with
non-utf8 pathnames than to have to track it down from later on.
Note that the fix for display normalizing to unicode is correct but the
fix for pathnames is probably not. Changing pathnames to unicode type
means that we will handle utf8 pathnames fine but pathnames can be any
sequence of bytes that do not contain null. We do not handle sequences
of bytes that are not valid utf8 here. To do that we need to revamp the
handling of basedir and paths to transform to bytes instead of unicode.
Didn't want to do that in 2.0.x as it will potentially introduce other
bugs as we find all the places that we combine basedir with other path
elements. Since no one has raised that as an issue thus far so it's not
something we need to handle yet. But it's something to keep in mind for
the future.
To test utf8 handling, create a utf8 directory and run a playbook from
within there.
To test non-utf8 handling (currently doesn't work as stated above), create
a directory with non-utf8 chars an run a playbook from there. In bash,
create that directory like this: mkdir $'\377'
Fixes#13937
* Don't re-use the existing connection if the remote_addr field of
the play context has changed
* When overriding variables in PlayContext (from task/variables),
don't set the same attribute based on a different variable name
if we had already previously set it from another variable name
Fixes#13880
* Relocate the assignment of the host address to the remote_addr field
in the play context, which was only done when the connection was created
(it's now done after the post_validate() is called on the play context)
* Make the assignment of the play context to the connection an else, since
it's not required if the connection is not reused
The correct default options for sudo_flags can be found at: https://github.com/ansible/ansible/blob/devel/lib/ansible/constants.py#L181
Slightly alter explanation of '-H' so as not to confuse it with -E, --preserve-env (which preserves existing environment variables).
When adding the two other options, include short explanations of those options.
Add note about '-n', which did not appear in 1.x I believe, and which bit me.
This is because we pass arguments to non-newstyle modules via an
external file. If we pipeline, then the interpreter thinks it has to
run the arguments as the script instead of what is piped in via stdin.
keeps backwards compat by not removing the previouslly non grammer matching states
and introduces new ones so user can decide which one he wants
(or keep both and still be inconsistent to annoy those that care)
