As the action plugin is used with the default python interpreter and
the change to python3 for FreeIPA, the use of OTP was not working anymore.

The ansible_python_interpreter is not automatically used for the module
part of the action plugin. Therefore ansible_python_interpreter needed to
be added to the action plugin call as a new var to make sure that the
module part is used with the proper python version.

Also a new import for the Python2/3 import test has been added to discover
of the server is supporting python2 or python3. The old
ansible_python_interpreter setting is saved before doing this and restored
after the one-time password has been generated on the server.

With IPA 4.7 bigger changes have been introduced

Changes:
- Use of timeconf and chrony instead of ntpconf and ntpd.
- A new option ntp_pool has been introduced.

With 4.6.90 pre versions have been introduced. The version parsing in
ipa_facts broke with this as it did not know about pre versions so far.

paths.KDESTROY instead of "kdestroy" and paths.GETENT instead of "getent"

Affected modules:
  roles/ipaclient/library/ipahost.py
  roles/ipaclient/library/ipajoin.py
  roles/ipaclient/library/ipanss.py

The directories library and action_plugins do only contain ipaclient specific
modules and plugins. Therefore these directories should be located in the
ipaclient role directory.