Minor fix in ipa-compat-manage command help message.

Signed-off-by: Abhijeet Kasurde <akasurde@redhat.com>
Reviewed-By: Petr Spacek <pspacek@redhat.com>

Wildcard imports should not be used.

Check for wildcard imports has been enabled in pylint.
Pylint note: options 'wildcard-import' causes too much false positive
results, so instead it I used 'unused-wildcard-import' option which has almost
the same effect.

Reviewed-By: Jan Cholasta <jcholast@redhat.com>

This patch removes unused imports, alse pylint has been configured to
check unused imports.

Reviewed-By: Jan Cholasta <jcholast@redhat.com>

In Python 3, `print` is no longer a statement. Call it as a function
everywhere, and include the future import to remove the statement
in Python 2 code as well.

Reviewed-By: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Jan Cholasta <jcholast@redhat.com>

sys.exc_value is deprecated since Python 1.5, and was removed in Python 3.

Reviewed-By: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Jan Cholasta <jcholast@redhat.com>

The 'as' syntax works from Python 2 on, and Python 3 will
drop the "comma" syntax.

Reviewed-By: Tomas Babej <tbabej@redhat.com>

https://fedorahosted.org/freeipa/ticket/3090

Reviewed-By: Martin Babinsky <mbabinsk@redhat.com>

Part of: https://fedorahosted.org/freeipa/ticket/4052

Reviewed-By: Petr Viktorin <pviktori@redhat.com>

Part of the effort to port FreeIPA to Arch Linux,
where Python 3 is the default.

FreeIPA hasn't been ported to Python 3, so the code must be modified to
run /usr/bin/python2

https://fedorahosted.org/freeipa/ticket/3438

Updated by pviktori@redhat.com