Better --check compatibility for ceph-mds role

Carefully chosen "always_run: true" parameters for read-only tasks that
register variables. This enables --check runs (at least on deployed
clusters).

roles/ceph-mds/tasks/docker/checks.yml

@@ -16,6 +16,7 @@
   with_items: "{{ ceph_config_keys }}"
   changed_when: false
   failed_when: false
+  always_run: true
   register: statleftover
 
 - name: fail if we find existing cluster files

roles/ceph-mds/tasks/docker/dirs_permissions.yml

@@ -6,6 +6,7 @@
   changed_when: false
   failed_when: false
   run_once: true
+  always_run: true
   register: ceph_version
 
 - set_fact:

roles/ceph-mds/tasks/docker/fetch_configs.yml

@@ -14,6 +14,7 @@
   changed_when: false
   become: false
   failed_when: false
+  always_run: true
   register: statconfig
 
 - name: try to fetch ceph config and keys

roles/ceph-mds/tasks/docker/main.yml

@@ -4,10 +4,12 @@
   register: ceph_health
   changed_when: false
   failed_when: false
+  always_run: true
 
 - name: check if it is Atomic host
   stat: path=/run/ostree-booted
   register: stat_ostree
+  always_run: true
 
 - name: set fact for using Atomic host
   set_fact:

roles/ceph-mds/tasks/docker/selinux.yml

@@ -3,6 +3,7 @@
   command: getenforce
   register: sestatus
   changed_when: false
+  always_run: true
 
 - name: set selinux permissions
   shell: chcon -Rt svirt_sandbox_file_t {{ item }}