Adds Nova keypair tests

This submission adds three methods to
rally/benchmark/scenarios/nova/utils.py
1) def create_keypair
2) def list_keypairs
3) def delete_keypair
Adds new file test_keypairs.py for nova
keypair scenarios

Added configuration files for keypair operations under
samples/tasks/scenarios/nova
1) create-and-list-keypairs.json
2) create-and-list-keypairs.yaml
3) create-and-delete-keypair.json
4) create-and-delete-keypair.yaml
5) boot-and-delete-server-with-keypairs.json
6) boot-and-delete-server-with-keypairs.yaml

Added unittests to test_utils.py and test_keypairs.py under
tests/unit/benchmark/scenarios/nova

Change-Id: Ic90d94d3dc925a9f225f760bfc550bf3e82e80b8

rally-jobs/rally.yaml

@@ -1271,3 +1271,55 @@
           nova:
             security_groups: -1
             security_group_rules: -1
+
+
+  NovaKeypair.create_and_delete_keypair:
+    -
+      runner:
+        type: "constant"
+        times: 4
+        concurrency: 4
+      context:
+        users:
+          tenants: 3
+          users_per_tenant: 2
+      sla:
+        failure_rate:
+          max: 0
+
+
+  NovaKeypair.create_and_list_keypairs:
+    -
+      runner:
+        type: "constant"
+        times: 4
+        concurrency: 4
+      context:
+        users:
+          tenants: 3
+          users_per_tenant: 2
+      sla:
+        failure_rate:
+          max: 0
+
+
+  NovaKeypair.boot_and_delete_server_with_keypair:
+    -
+      args:
+        flavor:
+          name: "m1.tiny"
+        image:
+          name: {{image_name}}
+      runner:
+        type: "constant"
+        times: 4
+        concurrency: 4
+      context:
+        users:
+          tenants: 3
+          users_per_tenant: 2
+        network:
+          start_cidr: "10.2.0.0/24"
+      sla:
+        failure_rate:
+          max: 0

samples/tasks/scenarios/nova/boot-and-delete-server-with-keypairs.json

@@ -0,0 +1,28 @@
+{
+    "NovaKeypair.boot_and_delete_server_with_keypair": [
+        {
+            "args": {
+                "flavor": {
+                    "name": "m1.nano"
+                },
+                "image": {
+                    "name": "^cirros.*uec$"
+                }
+            },
+            "runner": {
+                "type": "constant",
+                "times": 5,
+                "concurrency": 2
+            },
+            "context": {
+                "users": {
+                    "tenants": 2,
+                    "users_per_tenant": 1
+                },
+                "network": {
+                    "start_cidr": "100.1.0.0/26"
+                }
+            }
+        }
+    ]
+}

samples/tasks/scenarios/nova/boot-and-delete-server-with-keypairs.yaml

@@ -0,0 +1,18 @@
+---
+  NovaKeypair.boot_and_delete_server_with_keypair:
+    -
+      args:
+        flavor:
+            name: "m1.nano"
+        image:
+            name: "^cirros.*uec$"
+      runner:
+        type: "constant"
+        times: 5
+        concurrency: 2
+      context:
+        users:
+          tenants: 2
+          users_per_tenant: 1
+        network:
+          start_cidr: "100.1.0.0/26"

samples/tasks/scenarios/nova/create-and-delete-keypair.json

@@ -0,0 +1,17 @@
+{
+    "NovaKeypair.create_and_delete_keypair": [
+        {
+            "runner": {
+                "type": "constant",
+                "times": 10,
+                "concurrency": 2
+            },
+            "context": {
+                "users": {
+                    "tenants": 3,
+                    "users_per_tenant": 2
+                }
+            }
+        }
+    ]
+}

samples/tasks/scenarios/nova/create-and-delete-keypair.yaml

@@ -0,0 +1,11 @@
+---
+  NovaKeypair.create_and_delete_keypair:
+    -
+      runner:
+        type: "constant"
+        times: 10
+        concurrency: 2
+      context:
+        users:
+          tenants: 3
+          users_per_tenant: 2

samples/tasks/scenarios/nova/create-and-list-keypairs.json

@@ -0,0 +1,17 @@
+{
+    "NovaKeypair.create_and_list_keypairs": [
+        {
+            "runner": {
+                "type": "constant",
+                "times": 10,
+                "concurrency": 2
+            },
+            "context": {
+                "users": {
+                    "tenants": 3,
+                    "users_per_tenant": 2
+                }
+            }
+        }
+    ]
+}

samples/tasks/scenarios/nova/create-and-list-keypairs.yaml

@@ -0,0 +1,11 @@
+---
+  NovaKeypair.create_and_list_keypairs:
+    -
+      runner:
+        type: "constant"
+        times: 10
+        concurrency: 2
+      context:
+        users:
+          tenants: 3
+          users_per_tenant: 2