qa/tasks/ceph_manager.py: do not return a filter

as the caller might want to `len(manager.get_osd_status()['raw'])`, and
`len()` does not accept a `filter` object.

also, the filtered osd statuses are printed out using `self.log()`, so
we should materialize the `filter` object before sending it to logging
facility. otherwise we will have something like:
```
2020-04-08T02:58:37.001 INFO:tasks.ceph.ceph_manager.ceph:<filter object at 0x7f5a080e1518>
```
in the logging message.

Signed-off-by: Kefu Chai <kchai@redhat.com>
(cherry picked from commit 6bc09c5041d025c7ed3638ccfbf6496e1626abfb)

diff --git a/qa/tasks/ceph_manager.py b/qa/tasks/ceph_manager.py
index 6b1a89be35bec0f68a6fb965f31efff7adaa2b4c..211a46fec114d5e40004828c78b2b491d46454dc 100644 (file)
--- a/qa/tasks/ceph_manager.py
+++ b/qa/tasks/ceph_manager.py
@@ -1552,9 +1552,9 @@ class CephManager:
         """
         Get osd statuses sorted by states that the osds are in.
         """
-        osd_lines = filter(
+        osd_lines = list(filter(
             lambda x: x.startswith('osd.') and (("up" in x) or ("down" in x)),
-            self.raw_osd_status().split('\n'))
+            self.raw_osd_status().split('\n')))
         self.log(osd_lines)
         in_osds = [int(i[4:].split()[0])
                    for i in filter(lambda x: " in " in x, osd_lines)]