Add create-update-delete stack scenario

The create-update-delete stack scenario executes the following
actions with using Heat:
 - creates the new stack (with some resources)
 - updates the stack and stack resoruces with the new template
 - deletes the stack.
Unit-tests for the changes above are also included into patch.

Patch also adds rally test cases for stack create-update-delete
stack scenario (because rally tests require test scenario to be
used by test case samples):
Case 1:
- Heat creates a new stack
- Heat updates the stack with adding additional resource to
the stack
- Heat deletes the stack
Case 2:
- Heat creates a stack
- Heat updates the stack with deleting some resource from the
stack
- Heat deletes the stack.

Change-Id: I4c0ff24d0651434450a281a62670f1bd6c2a0000

rally-jobs/extra/random_strings.yaml.template

@@ -0,0 +1,13 @@
+heat_template_version: 2014-10-16
+
+description: Test template for rally create-update-delete scenario
+
+resources:
+  test_string_one:
+    type: OS::Heat::RandomString
+    properties:
+      length: 20
+  test_string_two:
+    type: OS::Heat::RandomString
+    properties:
+      length: 20

rally-jobs/extra/updated_random_strings_add.yaml.template

@@ -0,0 +1,19 @@
+heat_template_version: 2014-10-16
+
+description: >
+  Test template for create-update-delete-stack scenario in rally.
+  The template updates the stack defined by random_strings.yaml.template with additional resource.
+
+resources:
+  test_string_one:
+    type: OS::Heat::RandomString
+    properties:
+      length: 20
+  test_string_two:
+    type: OS::Heat::RandomString
+    properties:
+      length: 20
+  test_string_three:
+    type: OS::Heat::RandomString
+    properties:
+      length: 20

rally-jobs/extra/updated_random_strings_delete.yaml.template

@@ -0,0 +1,11 @@
+heat_template_version: 2014-10-16
+
+description: >
+  Test template for create-update-delete-stack scenario in rally.
+  The template deletes one resource from the stack defined by random_strings.yaml.template.
+
+resources:
+  test_string_one:
+    type: OS::Heat::RandomString
+    properties:
+      length: 20

rally-jobs/rally.yaml

@@ -475,7 +475,7 @@
 
     -
       args:
-        template_path: '/home/jenkins/.rally/extra/server_with_volume.yaml.template'
+        template_path: "/home/jenkins/.rally/extra/server_with_volume.yaml.template"
       runner:
         type: "constant"
         times: 2
@@ -488,6 +488,39 @@
         failure_rate:
           max: 0
 
+  HeatStacks.create_update_delete_stack:
+    -
+      args:
+        template_path: "/home/jenkins/.rally/extra/random_strings.yaml.template"
+        updated_template_path: "/home/jenkins/.rally/extra/updated_random_strings_add.yaml.template"
+      runner:
+        type: "constant"
+        times: 6
+        concurrency: 3
+      context:
+        users:
+          tenants: 2
+          users_per_tenant: 3
+      sla:
+        failure_rate:
+          max: 0
+
+    -
+      args:
+        template_path: "/home/jenkins/.rally/extra/random_strings.yaml.template"
+        updated_template_path: "/home/jenkins/.rally/extra/updated_random_strings_delete.yaml.template"
+      runner:
+        type: "constant"
+        times: 6
+        concurrency: 3
+      context:
+        users:
+          tenants: 2
+          users_per_tenant: 3
+      sla:
+        failure_rate:
+          max: 0
+
   Authenticate.keystone:
     -
       runner:

samples/tasks/scenarios/heat/create-update-delete-stack-add-res.json

@@ -0,0 +1,21 @@
+{
+    "HeatStacks.create_update_delete_stack": [
+        {
+            "args": {
+               "template_path": "templates/random_strings.yaml.template",
+               "updated_template_path": "templates/updated_random_strings_add.yaml.template"
+            },
+            "runner": {
+                "type": "constant",
+                "times": 10,
+                "concurrency": 2
+            },
+            "context": {
+                "users": {
+                    "tenants": 2,
+                    "users_per_tenant": 3
+                }
+            }
+        }
+    ]
+}

samples/tasks/scenarios/heat/create-update-delete-stack-add-res.yaml

@@ -0,0 +1,14 @@
+---
+  HeatStacks.create_update_delete_stack:
+    -
+      args:
+        template_path: "templates/random_strings.yaml.template"
+        updated_template_path: "templates/updated_random_strings_add.yaml.template"
+      runner:
+        type: "constant"
+        times: 10
+        concurrency: 2
+      context:
+        users:
+          tenants: 2
+          users_per_tenant: 3

samples/tasks/scenarios/heat/create-update-delete-stack-del-res.json

@@ -0,0 +1,21 @@
+{
+    "HeatStacks.create_update_delete_stack": [
+        {
+            "args": {
+               "template_path": "templates/random_strings.yaml.template",
+               "updated_template_path": "templates/updated_random_strings_delete.yaml.template"
+            },
+            "runner": {
+                "type": "constant",
+                "times": 10,
+                "concurrency": 2
+            },
+            "context": {
+                "users": {
+                    "tenants": 2,
+                    "users_per_tenant": 3
+                }
+            }
+        }
+    ]
+}

samples/tasks/scenarios/heat/create-update-delete-stack-del-res.yaml

@@ -0,0 +1,14 @@
+---
+  HeatStacks.create_update_delete_stack:
+    -
+      args:
+        template_path: "templates/random_strings.yaml.template"
+        updated_template_path: "templates/updated_random_strings_delete.yaml.template"
+      runner:
+        type: "constant"
+        times: 10
+        concurrency: 2
+      context:
+        users:
+          tenants: 2
+          users_per_tenant: 3