Tidy up validate-modules:parameter-list-no-elements (batch 1) (#1795) (#1834)

* fixed validation-modules for plugins/modules/storage/netapp/na_ontap_gather_facts.py

* fixed validation-modules for plugins/modules/source_control/gitlab/gitlab_runner.py

* fixed validation-modules for plugins/modules/packaging/os/redhat_subscription.py

* fixed validation-modules for plugins/modules/notification/twilio.py

* fixed validation-modules for plugins/modules/notification/slack.py

* fixed validation-modules for plugins/modules/notification/sendgrid.py

* fixed validation-modules for plugins/modules/notification/rocketchat.py

* fixed validation-modules for plugins/modules/notification/office_365_connector_card.py

* fixed validation-modules for plugins/modules/notification/nexmo.py

* fixed validation-modules for plugins/modules/notification/mail.py

* fixed validation-modules for plugins/modules/net_tools/omapi_host.py

* fixed validation-modules for plugins/modules/net_tools/nsupdate.py

* fixed validation-modules for plugins/modules/net_tools/dnsimple.py

* fixed validation-modules for plugins/modules/monitoring/pagerduty.py

* fixed validation-modules for plugins/modules/monitoring/librato_annotation.py

* fixed validation-modules for plugins/modules/identity/onepassword_info.py

* fixed validation-modules for plugins/modules/identity/keycloak/keycloak_client.py

* fixed validation-modules for plugins/modules/files/xml.py

* fixed validation-modules for plugins/modules/cloud/softlayer/sl_vm.py

* fixed validation-modules for plugins/modules/cloud/smartos/vmadm.py

* fixed validation-modules for plugins/modules/cloud/pubnub/pubnub_blocks.py

* fixed validation-modules for plugins/modules/cloud/packet/packet_device.py

* fixed validation-modules for plugins/modules/cloud/lxd/lxd_container.py

* fixed validation-modules for plugins/module_utils/oracle/oci_utils.py

* fixed validation-modules for plugins/doc_fragments/oracle_creatable_resource.py

* Tidy up validate-modules:parameter-list-no-elements for some modules

* fixed validation-modules for plugins/modules/monitoring/statusio_maintenance.py

* Fixed pending issues from CI validation

* Fixed xml module elements for add_children & set_children

* added changelog fragment

* typo

* fix wording in changelog frag

(cherry picked from commit f33323ca89)

Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>

plugins/modules/files/xml.py

@@ -66,6 +66,7 @@ options:
       or a hash where the key is an element name and the value is the element value.
     - This parameter requires C(xpath) to be set.
     type: list
+    elements: raw
   set_children:
     description:
     - Set the child-element(s) of a selected element for a given C(xpath).
@@ -73,6 +74,7 @@ options:
     - Child elements must be specified as in C(add_children).
     - This parameter requires C(xpath) to be set.
     type: list
+    elements: raw
   count:
     description:
     - Search for a given C(xpath) and provide the count of any matches.
@@ -809,8 +811,8 @@ def main():
             state=dict(type='str', default='present', choices=['absent', 'present'], aliases=['ensure']),
             value=dict(type='raw'),
             attribute=dict(type='raw'),
-            add_children=dict(type='list'),
-            set_children=dict(type='list'),
+            add_children=dict(type='list', elements='raw'),
+            set_children=dict(type='list', elements='raw'),
             count=dict(type='bool', default=False),
             print_match=dict(type='bool', default=False),
             pretty_print=dict(type='bool', default=False),