Add absolute_import future imports

Add absolute_import from __future__ so that pylint
does not fail and to achieve python3 behavior in
python2.

Reviewed-By: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>

ipaplatform/rhel/constants.py

@@ -7,6 +7,8 @@ This RHEL base platform module exports platform related constants.
 '''
 
 # Fallback to default constant definitions
+from __future__ import absolute_import
+
 from ipaplatform.redhat.constants import RedHatConstantsNamespace
 
 

ipaplatform/rhel/paths.py

@@ -23,6 +23,8 @@ in RHEL-based systems.
 '''
 
 # Fallback to default path definitions
+from __future__ import absolute_import
+
 from ipaplatform.redhat.paths import RedHatPathNamespace
 
 

ipaplatform/rhel/services.py

@@ -22,6 +22,8 @@
 Contains RHEL-specific service class implementations.
 """
 
+from __future__ import absolute_import
+
 from ipaplatform.redhat import services as redhat_services
 
 # Mappings from service names as FreeIPA code references to these services

ipaplatform/rhel/tasks.py

@@ -21,6 +21,8 @@
 This module contains default RHEL-specific implementations of system tasks.
 '''
 
+from __future__ import absolute_import
+
 from ipaplatform.redhat.tasks import RedHatTaskNamespace