ipaserver/ipareplica: Add isatty method to AnsibleModuleLog

In some cases ipa code is using sys.stdout.isatty. As stdout is mapped
to AnsibleModuleLog this call will lead in a traceback as it was not
defined.

The staticmethod isatty has been added to AnsibleModuleLog in ipaserver
role module_utils/ansible_ipa_server.py and in ipareplica role
module_utils/ansible_ipa_repica.py.

Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=2120415
       ansible-freeipa Replica Install Setup DNS fails
Fixes: #251 - 'AnsibleModuleLog' object has no attribute 'isatty'
Fixes: #117 - 'AnsibleModuleLog' object has no attribute 'isatty'