[Tempest] Fix concurrency in test with listing share servers

Before it was possible to pick up temporary status of share server
and fail to filter share servers as second API call, because status
could be changed. Fix it by filtering with 'active' status.

Change-Id: Idcff68ce475d31b38a34d410970cc839b06d18b3
Closes-Bug: #1670757
1 file changed
tree: 8edf341716f4a7c23f1fabd1fe64bd73987e4c48
  1. manila_tempest_tests/