ansible_ipa_client: Fix ansible-test fake execution test findings

All imports that are only available after installing IPA need to be in a
try exception clause to be able to pass the fake execution test. The old
workaround "if 'ansible.executor' in sys.modules:" is not working with
this test anymore.

If the imports can not be done, all used and needed attributes are
defines with the value None.

The new function check_imports has been added to fail with module.fail_json
if an import exception occured and ANSIBLE_IPA_CLIENT_MODULE_IMPORT_ERROR is
not None. This function needs to be called in all modules.

The `copyright` date is extended with `-2022`.

roles/ipaclient/module_utils/ansible_ipa_client.py

@@ -5,7 +5,7 @@
 #
 # Based on ipa-client-install code
 #
-# Copyright (C) 2017  Red Hat
+# Copyright (C) 2017-2022  Red Hat
 # see file 'COPYING' for use and warranty information
 #
 # This program is free software; you can redistribute it and/or modify
@@ -46,17 +46,36 @@ __all__ = ["gssapi", "version", "ipadiscovery", "api", "errors", "x509",
            "configure_nslcd_conf", "configure_ssh_config",
            "configure_sshd_config", "configure_automount",
            "configure_firefox", "sync_time", "check_ldap_conf",
-           "sssd_enable_ifp", "getargspec"]
+           "sssd_enable_ifp", "getargspec", "paths", "options",
+           "IPA_PYTHON_VERSION", "NUM_VERSION", "certdb", "get_ca_cert",
+           "ipalib", "logger", "ipautil", "installer"]
 
 import sys
 
-# HACK: workaround for Ansible 2.9
+# Import getargspec from inspect or provide own getargspec for
-# https://github.com/ansible/ansible/issues/68361
+# Python 2 compatibility with Python 3.11+.
-if 'ansible.executor' in sys.modules:
+try:
-    for attr in __all__:
+    from inspect import getargspec
-        setattr(sys.modules[__name__], attr, None)
+except ImportError:
+    from collections import namedtuple
+    from inspect import getfullargspec
 
-else:
+    # The code is copied from Python 3.10 inspect.py
+    # Authors: Ka-Ping Yee <ping@lfw.org>
+    #          Yury Selivanov <yselivanov@sprymix.com>
+    ArgSpec = namedtuple('ArgSpec', 'args varargs keywords defaults')
+
+    def getargspec(func):
+        args, varargs, varkw, defaults, kwonlyargs, _kwonlydefaults, \
+            ann = getfullargspec(func)
+        if kwonlyargs or ann:
+            raise ValueError(
+                "Function has keyword-only parameters or annotations"
+                ", use inspect.signature() API which can support them")
+        return ArgSpec(args, varargs, varkw, defaults)
+
+
+try:
     from ipapython.version import NUM_VERSION, VERSION
 
     if NUM_VERSION < 30201:
@@ -113,33 +132,12 @@ else:
         import gssapi
         import logging
 
-        # Import getargspec from inspect or provide own getargspec for
-        # Python 2 compatibility with Python 3.11+.
-        try:
-            from inspect import getargspec
-        except ImportError:
-            from collections import namedtuple
-            from inspect import getfullargspec
-
-            # The code is copied from Python 3.10 inspect.py
-            # Authors: Ka-Ping Yee <ping@lfw.org>
-            #          Yury Selivanov <yselivanov@sprymix.com>
-            ArgSpec = namedtuple('ArgSpec', 'args varargs keywords defaults')
-
-            def getargspec(func):
-                args, varargs, varkw, defaults, kwonlyargs, _kwonlydefaults, \
-                    ann = getfullargspec(func)
-                if kwonlyargs or ann:
-                    raise ValueError(
-                        "Function has keyword-only parameters or annotations"
-                        ", use inspect.signature() API which can support them")
-                return ArgSpec(args, varargs, varkw, defaults)
-
         from ipapython import version
         try:
             from ipaclient.install import ipadiscovery
         except ImportError:
             from ipaclient import ipadiscovery
+        import ipalib
         from ipalib import api, errors, x509
         from ipalib import constants
         try:
@@ -312,6 +310,15 @@ else:
 
         raise Exception("freeipa version '%s' is too old" % VERSION)
 
+except ImportError as _err:
+    ANSIBLE_IPA_CLIENT_MODULE_IMPORT_ERROR = str(_err)
+
+    for attr in __all__:
+        setattr(sys.modules[__name__], attr, None)
+
+else:
+    ANSIBLE_IPA_CLIENT_MODULE_IMPORT_ERROR = None
+
 
 def setup_logging():
     standard_logging_setup(
@@ -333,3 +340,8 @@ def ansible_module_get_parsed_ip_addresses(ansible_module,
             ansible_module.fail_json(msg="Invalid IP Address %s: %s" % (ip, e))
         ip_addrs.append(ip_parsed)
     return ip_addrs
+
+
+def check_imports(module):
+    if ANSIBLE_IPA_CLIENT_MODULE_IMPORT_ERROR is not None:
+        module.fail_json(msg=ANSIBLE_IPA_CLIENT_MODULE_IMPORT_ERROR)