ceph-config: fix ceph-volume lvm batch report

Since the major ceph-volume lvm batch refactoring, the report value
is different.
Before the refact, the report was a dict with the OSDs list to be created
under the "osds" key.
After the refact, the report is a list of dict.

Signed-off-by: Dimitri Savineau <dsavinea@redhat.com>
(cherry picked from commit 827b23353f)

roles/ceph-config/tasks/main.yml

@@ -58,16 +58,23 @@
           CEPH_CONTAINER_BINARY: "{{ container_binary }}"
           PYTHONIOENCODING: utf-8
         when: _devices | default([]) | length > 0
-    when:
-      - devices | default([]) | length > 0
 
-  - name: set_fact num_osds from the output of 'ceph-volume lvm batch --report'
+      - name: set_fact num_osds from the output of 'ceph-volume lvm batch --report' (legacy report)
         set_fact:
           num_osds: "{{ ((lvm_batch_report.stdout | default('{}') | from_json).osds | default([]) | length | int) + (_rejected_devices | default([]) | length | int) }}"
         when:
-      - devices | default([]) | length > 0
+          - (lvm_batch_report.stdout | default('{}') | from_json) is mapping
           - (lvm_batch_report.stdout | default('{}') | from_json).changed | default(true) | bool
 
+      - name: set_fact num_osds from the output of 'ceph-volume lvm batch --report' (new report)
+        set_fact:
+          num_osds: "{{ ((lvm_batch_report.stdout | default('{}') | from_json) | default([]) | length | int) + (_rejected_devices | default([]) | length | int) }}"
+        when:
+          - (lvm_batch_report.stdout | default('{}') | from_json) is not mapping
+          - (lvm_batch_report.stdout | default('{}') | from_json).changed | default(true) | bool
+    when:
+      - devices | default([]) | length > 0
+
   - name: run 'ceph-volume lvm list' to see how many osds have already been created
     ceph_volume:
       action: "list"