Merge pull request #27014 from badone/wip-mimic-CA-mods

mimic: qa/ceph-ansible: modifications for mimic branch

Reviewed-by: Yuri Weinstein <yweinste@redhat.com>

qa/suites/ceph-ansible/smoke/basic/2-ceph/ceph_ansible.yaml

@@ -3,7 +3,7 @@ meta:
 
 overrides:
    ceph_ansible:
-     ansible-version: "2.5"
+     ansible-version: "2.6"
      branch: stable-3.2
      vars:
         ceph_conf_overrides:
@@ -14,8 +14,8 @@ overrides:
             osd pool default pgp num: 64
             mon_max_pg_per_osd: 1024
         ceph_test: true
-        ceph_stable_release: luminous
-        osd_scenario: collocated
+        ceph_stable_release: mimic
+        osd_scenario: lvm
         journal_size: 1024
         osd_auto_discovery: false
         ceph_origin: repository