also normalized -M option across all cli
fixes #12016

This bug was introduced in commit f8bf2ba1 on July 27.  Hasn't gone out
in a release yet.

Unicode and other fixes for vault

add option to ansible-vault to read new password from file for rekey

allow ansible to connect to docker containers (without using ssh)

The --new-vault-password-file option works the same as
--vault-password-file but applies only to rekeying (when
--vault-password-file sets the old password). Also update the manpage
to document these options more fully.

remove defaults from inhertiable fieldattributes to allow for proper detection and override

added block environment test

Speed up execution

`if method in dir(self):` is very inefficient:

- it must construct a list object listing all the object attributes & methods
- it must then perform a O(N) linear scan of that list

Replace it with the idiomatic `if hasattr(self, method):`, which is a
O(1) expected time hash lookup.

Should fix #11981.

fixes #12055

Fixes #12011

cloudstack: more integration tests and updates

Revert "Add PowerShell exception handling and turn on strict mode."

Apart from ansible-vault create, every vault subcommand is happy to deal
with multiple filenames, so we can check that there's at least one, and
make create check separately that there aren't any extra.