Without this change the "Import variables specific to distribution"
tasks fail with "Could not find file on the Ansible Controller..."
on environments with inject facts disabled.
This changes the tests to run with ansible with
inject_facts_as_vars = false and fixes other roles and playbooks.
Due to use of some shell commands that required a Kerberos ticket,
the ipaservice test test_service_disable would no work if a ticket
was not granted before it ran. This patch adresses this issue by
acquiring a ticket for the `admin` user before it is needed, and
destroying the tickets by the end of the test execution.
Services without certificates, but with keytabs were not being
disabled. This change allows execution of service_disable if
there is a certificate or if has_keytab is true.
A new test was added to verify the issue:
tests/service/test_service_disable.yml
