correct unbound error in ec2.py's RDS code path

Fixes #10910

fixes #10891

avoid path issues by determining the path of ansible-pull and using its path to run ansible and ansible-playbook

Previously, a mixture of "OracleLinux" and "Oracle Linux" was used,
causing the `ansible_os_family` fact not to be set to `RedHat`.

Fixes #10742.

This fix resolves an issue on EL6 systems where there may be multiple versions
of pycrypto installed.  EPEL provides both `python-crypto` and
`python-crypto2.6`.  These packages are co-installable.  However, modules
importing the `Crypto` library must specify which version to use, otherwise the
default will be used.

This change follows the same pattern established in `bin/ansible` for
specifying python library requirements.

Fixes #10758

Only try kerberos auth when username contains `@` and pass realm to pywinrm. Alternative to #10644, fixes #10577.

fixes https://github.com/ansible/ansible-modules-core/issues/1108

The --force-handlers command line argument was not correctly running
handlers on hosts which had tasks that later failed. This corrects that,
and also allows you to specify force_handlers in ansible.cfg or in a
play.

Fix indentation

fixes #10591

removed folding sudo/su to become logic from constants as it is already present downstream in playbook/play/tasks

they could be caused by random character combinations, fixes #10468

dont break everything when one of the vars  in inject does not template correctly, wait till its used

Update README.md

I think since ansible and the ansible-modules have been splitted --recursive should be added