Update fio helpers

- Create / delete fio VMs in parallel. VMs are to be created in batches, each batch
parallelism size is controlled by a new config parameter
- A server group with 'soft-anti-affinity' policy is added to fio setup.
This way VMs will be automatically scheduled on different hosts

Related-PROD: PROD-37187
Change-Id: I0a22b1a1fe279966e8370605d84783c5c49fea50
diff --git a/fio/clouds.yaml b/fio/clouds.yaml
index 7964385..d373e5a 100644
--- a/fio/clouds.yaml
+++ b/fio/clouds.yaml
@@ -31,6 +31,7 @@
       keypair_name: "fio-key"
       keypair_file_location: "."
       fio_client_name_mask: "fio-vm"
+      fio_aa_group_name: "fio-anti-affinity-group"
       fio_flavor_name: "fio-flavor"
       fio_flavor_ram: 2048
       fio_flavor_cpus: 10
@@ -42,4 +43,5 @@
       fio_vol_mountpoint: "/dev/vdc"
       mtu_size: 8000
       hv_suffix: "kaas-kubernetes-XXX"
-      cloud_name: "cloud-XXX"
+      cloud_name: "cloud-lon-XXX"
+      concurrency: 5