Bump cirros image versions to 5.1 and 5.2

Updated/Added:
  - image sigining routine commands
  - prepare.sh
  - cmp-check.sh
  - configure.sh updated with image versions 5.1 and 5.2
  - rally scenarios updates

  Related PROD: PROD-36794

Change-Id: I8e3ef81c3ecb51af97cb08c676dbfd9804e0d803
diff --git a/k8s/rally-files/openstack-mos-scn-i1.json b/k8s/rally-files/openstack-mos-scn-i1.json
index cac67f4..7752c1f 100644
--- a/k8s/rally-files/openstack-mos-scn-i1.json
+++ b/k8s/rally-files/openstack-mos-scn-i1.json
@@ -1,5 +1,5 @@
 {% set flavor_name = flavor_name or "cvp.tiny" %}
-{% set image_name = image_name or "cvp.cirros.35" %}
+{% set image_name = image_name or "cvp.cirros.51" %}
 {% set availability_zone = "nova" %}
 {% set concurrency = 1 %}
 {% set volume_size = 1 %}