ipaserver: Add support for DNS over TLS

This change adds support for DNS over TLS to the ipaserver role.

New variables

ipaserver_dot_forwarders
    List of DNS over TLS forwarders. Required if ipaserver_dns_over_tls
    is enabled. (list of strings)
    required: false
ipaserver_dns_over_tls | ipaclient_dns_over_tls
    Configure DNS over TLS. Requires FreeIPA version 4.12.5 or later.
    (bool, default: false)
    required: false
ipaserver_dns_over_tls_cert
    Certificate to use for DNS over TLS. If empty, a new certificate will
    be requested from IPA CA. (string)
    required: false
ipaserver_dns_over_tls_key
    Key for certificate specified in ipaserver_dns_over_tls_cert. (string)
    required: false
ipaserver_dns_policy
    Encrypted DNS policy. Only usable if `ipaserver_dns_over_tls` is
    enabled. (choice: relaxed, enforced, default: relaxed)
    required: false

New distribution specific variable

ipaserver_packages_dot
    List of IPA packages needed for DNS over TLS.

roles/ipaserver/library/ipaserver_setup_dns.py

@@ -83,6 +83,32 @@ options:
     type: bool
     default: no
     required: no
+  dot_forwarders:
+    description: List of DNS over TLS forwarders
+    type: list
+    elements: str
+    default: []
+    required: no
+  dns_over_tls:
+    description: Configure DNS over TLS
+    type: bool
+    default: no
+    required: no
+  dns_over_tls_cert:
+    description:
+      Certificate to use for DNS over TLS. If empty, a new
+      certificate will be requested from IPA CA
+    type: str
+    required: no
+  dns_over_tls_key:
+    description: Key for certificate specified in dns_over_tls_cert
+    type: str
+    required: no
+  dns_policy:
+    description: Encrypted DNS policy
+    type: str
+    choices: ['relaxed', 'enforced']
+    default: 'relaxed'
   dns_ip_addresses:
     description: The dns ip_addresses setting
     type: list
@@ -107,9 +133,13 @@ from ansible.module_utils.basic import AnsibleModule
 from ansible.module_utils.ansible_ipa_server import (
     check_imports, AnsibleModuleLog, setup_logging, options, paths, dns,
     ansible_module_get_parsed_ip_addresses, sysrestore, api_Backend_ldap2,
-    redirect_stdout, bindinstance
+    redirect_stdout
 )
 
+# pylint: disable=unused-import
+from ansible.module_utils.ansible_ipa_server import bindinstance  # noqa: F401
+# pylint: enable=unused-import
+
 
 def main():
     ansible_module = AnsibleModule(
@@ -130,6 +160,14 @@ def main():
                                 default='first'),
             no_dnssec_validation=dict(required=False, type='bool',
                                       default=False),
+            dot_forwarders=dict(required=False, type='list', elements='str',
+                                default=[]),
+            dns_over_tls=dict(required=False, type='bool', default=False),
+            dns_over_tls_cert=dict(required=False, type='str'),
+            dns_over_tls_key=dict(required=False, type='str'),
+            dns_policy=dict(required=False, type='str',
+                            choices=['relaxed', 'enforced'],
+                            default='relaxed'),
             # additional
             dns_ip_addresses=dict(required=True, type='list', elements='str'),
             dns_reverse_zones=dict(required=True, type='list', elements='str'),
@@ -158,6 +196,11 @@ def main():
     options.forward_policy = ansible_module.params.get('forward_policy')
     options.no_dnssec_validation = ansible_module.params.get(
         'no_dnssec_validation')
+    options.dot_forwarders = ansible_module.params.get('dot_forwarders')
+    options.dns_over_tls = ansible_module.params.get('dns_over_tls')
+    options.dns_over_tls_cert = ansible_module.params.get('dns_over_tls_cert')
+    options.dns_over_tls_key = ansible_module.params.get('dns_over_tls_key')
+    options.dns_policy = ansible_module.params.get('dns_policy')
     # additional
     dns.ip_addresses = ansible_module_get_parsed_ip_addresses(
         ansible_module, 'dns_ip_addresses')
@@ -165,25 +208,16 @@ def main():
 
     # init ##################################################################
 
-    fstore = sysrestore.FileStore(paths.SYSRESTORE)
+    # pylint: disable=unused-variable
+    fstore = sysrestore.FileStore(paths.SYSRESTORE)  # noqa: F841
+    # pylint: enable=unused-variable
 
     api_Backend_ldap2(options.host_name, options.setup_ca, connect=True)
 
     # setup dns #############################################################
 
     with redirect_stdout(ansible_log):
-        if options.setup_dns:
-            dns.install(False, False, options)
-        else:
-            # Create a BIND instance
-            bind = bindinstance.BindInstance(fstore)
-            bind.set_output(ansible_log)
-            bind.setup(options.host_name, options.ip_addresses,
-                       options.realm_name,
-                       options.domain_name, (), 'first', (),
-                       zonemgr=options.zonemgr,
-                       no_dnssec_validation=options.no_dnssec_validation)
-            bind.create_file_with_system_records()
+        dns.install(False, False, options)
 
     # done ##################################################################