The principal is not used and needed in the module, therefore it got removed.

This is done right ipanss is used as this is failing without the ca.crt file.

The first validation test of the krb5.keytab is now done using the system
krb5.conf file. If this test failed, then the validation will be done with
the temporary krb5.conf file.

An additionally IPA test has been added. For now this is "ipa ping" as there
seems not to be a more comprehensive validation test for proper IPA
configuration.

create_db is requiring an additional argument for IPA version 4.4.4 still.

This will provide information if the ca.crt file exists. This will be needed
to be able to decide what needs to be fixed later on.

ipajoin is not called always and therefore we can no depend on the subject
base gathered from the certificate output of the join call.

The subject base generated in discovery is only a guess and might have been
changed by the admin at installation process. Therefore it is needed to
get this from the server - done in ipaapi as we are authenticaed there already
to use the api.

The subject base generated in discovery is only a guess and might have been
changed by the admin at installation process. Therefore it is needed to
get this from the server.

subject_base has been added as a new return value.

Use subject base form ipaapi in roles/ipaclient/tasks/install.yml instead of
guessed value from ipadiscovery.

It is not possible to restore a missing krb5.keytab using the admin
credential. Therefore the only way is to fail in this case.

The choined tag is only set if changes have been done with the join.

already_joined is set if the ipa-join command is filing with error 13
(already joined). The module is not calling fail_json in this case anymore.

mutually_exclusive and required_one_of are only able to check if the parameters
are defined, but not if they are set to "".

Test if the krb5.keytab on the machine is valid and can be used.

options:
  servers:
    description: The FQDN of the IPA servers to connect to.
    required: true
  domain:
    description: The primary DNS domain of an existing IPA deployment.
    required: true
  realm:
    description: The Kerberos realm of an existing IPA deployment.
    required: true
  hostname:
    description: The hostname of the machine to join (FQDN).
    required: true
  kdc:
    description: The name or address of the host running the KDC.
    required: true
  principal:
    description: The authorized kerberos principal used to join the IPA realm.
    required: false
  kinit_attempts:
    description: Repeat the request for host Kerberos ticket X times.
    required: false
    default: 5

returns:
  krb5_keytab_ok:
    description: The flag describes if krb5.keytab on the host is usable.
    returned: always
    type: bool

With otp usage the user supplied principal may not be used for join.

When ipahost is run to generate an OTP and the host is already existing,
the OTP is properly generated but ipa-join will fail if the host is
already enrolled (ie when it has a keytab).
Add a step calling ipa host-disable to erase OTP and keytab before
requesting an OTP.

Also: Add ipaclient_kinit_attempts default value to
roles/ipaclient/defaults/main.yml

The one_of check was using a tuple instead of a list, the check for principal
or keytab has been removed, a new mutually exclusive check for password
xor keytab has been added.

For ipa versions prior to 4.5 it is needed to use ipa-client-install script
as a source for functions. But the script contains a global finally clause
in which the generated ccache file gets removed. Threfore the script is
temporarily copied to ipa_client_install.py and the global finally clause
gets removed from the copy. All this is done in a temporary directory, which
gets removed right after the import has been done.

For ipa versions prior to 4.5 it is needed to use ipa-client-install script
as a source for functions. But the script contains a global finally clause
in which the generated ccache file gets removed. Threfore the script is
temporarily copied to ipa_client_install.py and the global finally clause
gets removed from the copy. All this is done in a temporary directory, which
gets removed right after the import has been done.

A Object called options is generated as ipa-client-install and also
ipaclient/install/client.py functions are using this object.

inspect.argspec is used on configure_krb5_conf to find out if the function
requires configure_sssd as an optional argument or in the options object.

freeipa 4.4 is the first version that supports all needed functions.
Therefore a check has been added to make sure that ipadiscovery fails for
versions before 4.4.

The python bindings of ipa versions before 4.6 are having a different
structure.

ipa_python_version is the version gathered from ipapython.version.NUM_VERSION.
For ipa versions before 3.2.1, the version is generated from
ipapython.version.VERSION because NUM_VERSION changed the format two times
before 3.2.1.

The discovery was not working if a server has been specified. The domain has
been needed additionally. The domain is now gathered from the server name if
it is missing in this case.