Add murano benchmarks

Scenarios:
* list-environment
* create_and_delete_environment

Add murano environment to cleanup resources
Add unit tests for scenarios

blueprint: Important-for-next-release
Co-Authored-By: Roman Vasilets <rvasilets@mirantis.com>
Co-Authored-By: Sergey Murashov <smurashov@mirantis.com>

Change-Id: Id6888325e77eada2f51ad0bf8af80415c2c8d487

rally-jobs/rally-murano.yaml

@@ -0,0 +1,28 @@
+---
+  MuranoEnvironments.list_environments:
+    -
+      runner:
+        type: "constant"
+        times: 30
+        concurrency: 4
+      context:
+        users:
+          tenants: 2
+          users_per_tenant: 2
+      sla:
+        failure_rate:
+          max: 0
+
+  MuranoEnvironments.create_and_delete_environment:
+    -
+      runner:
+        type: "constant"
+        times: 20
+        concurrency: 2
+      context:
+        users:
+          tenants: 2
+          users_per_tenant: 2
+      sla:
+        failure_rate:
+          max: 0

samples/tasks/scenarios/murano/list-environments.json

@@ -0,0 +1,17 @@
+{
+    "MuranoEnvironments.list_environments": [
+        {
+            "runner": {
+                "type": "constant",
+                "times": 10,
+                "concurrency": 2
+            },
+            "context": {
+                "users": {
+                    "tenants": 2,
+                    "users_per_tenant": 2
+                }
+            }
+        }
+    ]
+}

samples/tasks/scenarios/murano/list-environments.yaml

@@ -0,0 +1,11 @@
+---
+  MuranoEnvironments.list_environments:
+    -
+      runner:
+        type: "constant"
+        times: 10
+        concurrency: 2
+      context:
+        users:
+          tenants: 2
+          users_per_tenant: 2