Fix --check argument for overcloud host configure

When running 'kayobe overcloud host configure', there are some tasks
that we need to run even in check mode, to ensure that subsequent tasks
can execute. These tasks should not change the target systems.

Change-Id: Id912ccd7c4bf2a4ccff8d16f2a9aa6ed2127a335
Story: 2004798
Task: 28951

ansible/kayobe-ansible-user.yml

@@ -17,6 +17,7 @@
         module: command ssh -o BatchMode=yes -p {{ ssh_port }} {{ ssh_user }}@{{ ssh_host }} hostname
       failed_when: false
       changed_when: false
+      check_mode: no
       register: ssh_result
       vars:
         ssh_user: "{{ ansible_user }}"

ansible/roles/disable-glean/tasks/main.yml

@@ -3,6 +3,7 @@
   command: systemctl list-units glean*.service --no-legend --no-pager --state=loaded
   register: glean_services
   changed_when: False
+  check_mode: no
 
 - name: Ensure Glean services are stopped and disabled
   service:

releasenotes/notes/fix-check-mode-c0f8e1fcb09f730b.yaml

@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    Fixes some issues seen when using the ``--check`` argument with ``kayobe
+    overcloud host configure``. See `story 2004798
+    <https://storyboard.openstack.org/#!/story/2004798>`__.