qa/tests: added ragweed coverage to stress-split* upgrade suites

added ceph config set global bluestore_warn_on_legacy_statfs fals

Fixes: http://tracker.ceph.com/issues/40452
Fices: http://tracker.ceph.com/issues/40467
Signed-off-by: Yuri Weinstein <yweinste@redhat.com>

qa/suites/upgrade/mimic-x/parallel/1-ceph-install/mimic.yaml

@@ -33,6 +33,7 @@ tasks:
     conf:
       global:
         mon warn on pool no app: false
+        bluestore_warn_on_legacy_statfs: false
 - exec:
     osd.0:
       - ceph osd require-osd-release mimic

qa/suites/upgrade/mimic-x/stress-split/1-ceph-install/mimic.yaml

@@ -13,6 +13,9 @@ tasks:
     extra_packages: ['librados2']
 - print: "**** done install mimic"
 - ceph:
+    conf:
+      global:
+        bluestore_warn_on_legacy_statfs: false
 - exec:
     osd.0:
       - ceph osd require-osd-release mimic

qa/suites/upgrade/mimic-x/stress-split/4-workload/rgw_ragweed_prepare.yaml

@@ -0,0 +1,14 @@
+meta:
+- desc: |
+   rgw ragweed prepare before upgrade
+stress-tasks:
+  - full_sequential:
+     - sequential:
+       - rgw:
+         - client.0
+       - ragweed:
+           client.0:
+             default-branch: ceph-nautilus
+             rgw_server: client.0
+             stages: prepare
+       - print: "**** done rgw ragweed prepare 4-workload"

qa/suites/upgrade/mimic-x/stress-split/7-final-workload/rgw-swift-ragweed_check.yaml

@@ -0,0 +1,18 @@
+meta:
+- desc: |
+   swift api tests for rgw
+   rgw ragweed check after upgrade
+tasks:
+- rgw:
+    client.0:
+- print: "**** done rgw 7-workload"
+- swift:
+    client.0:
+      rgw_server: client.0
+- print: "**** done swift 7-workload"
+- ragweed:
+    client.0:
+      default-branch: ceph-nautilus
+      rgw_server: client.0
+      stages: check
+- print: "**** done rgw ragweed check 7-workload"