Restructure doc/samples/tasks directory

Spread the content of doc/samples/tasks directory to separate folders
for context, scenarios and runners.
Add documentation and samples for runners.

Change-Id: I4394e73060c6c97fae7bcf7039674041d43917e8

doc/samples/tasks/contexts/contexts.rst

@@ -0,0 +1,5 @@
+Contexts Configuration Samples
+==============================
+
+This directory contains samples how to to define different types of
+environments using context.

doc/samples/tasks/runners/constant/constant_for_duration.json

@@ -0,0 +1,20 @@
+{
+    "Dummy.dummy": [
+        {
+            "args": {
+                "sleep": 5
+            },
+            "runner": {
+                "type": "constant_for_duration",
+                "concurrency": 5,
+                "duration": 30
+            },
+            "context": {
+                "users": {
+                    "tenants": 1,
+                    "users_per_tenant": 1
+                }
+            }
+        }
+    ]
+}

doc/samples/tasks/runners/constant/constant_for_duration.yaml

@@ -0,0 +1,13 @@
+---
+  Dummy.dummy:
+    -
+      args:
+        sleep: 5
+      runner:
+        type: "constant_for_duration"
+        concurrency: 5
+        duration: 30
+      context:
+        users:
+          tenants: 1
+          users_per_tenant: 1

doc/samples/tasks/runners/constant/constant_timeout.json

@@ -0,0 +1,21 @@
+{
+    "Dummy.dummy": [
+        {
+            "args": {
+                "sleep": 10
+            },
+            "runner": {
+                "type": "constant",
+                "times": 20,
+                "concurrency": 5,
+                "timeout": 5
+            },
+            "context": {
+                "users": {
+                    "tenants": 1,
+                    "users_per_tenant": 1
+                }
+            }
+        }
+    ]
+}

doc/samples/tasks/runners/constant/constant_timeout.yaml

@@ -0,0 +1,14 @@
+---
+  Dummy.dummy:
+    -
+      args:
+        sleep: 10
+      runner:
+        type: "constant"
+        times: 20
+        concurrency: 5
+        timeout: 5
+      context:
+        users:
+          tenants: 1
+          users_per_tenant: 1

doc/samples/tasks/runners/periodic/periodic.json

@@ -0,0 +1,21 @@
+{
+    "Dummy.dummy": [
+        {
+            "args": {
+                "sleep": 5
+            },
+            "runner": {
+                "type": "periodic",
+                "times": 20,
+                "period": 3,
+                "timeout": 6
+            },
+            "context": {
+                "users": {
+                    "tenants": 1,
+                    "users_per_tenant": 1
+                }
+            }
+        }
+    ]
+}

doc/samples/tasks/runners/periodic/periodic.yaml

@@ -0,0 +1,14 @@
+---
+  Dummy.dummy:
+    -
+      args:
+        sleep: 5
+      runner:
+        type: "periodic"
+        times: 20
+        period: 3
+        timeout: 6
+      context:
+        users:
+          tenants: 1
+          users_per_tenant: 1

doc/samples/tasks/runners/runners.rst

@@ -0,0 +1,9 @@
+Runners Configuration Samples
+=============================
+
+This directory contains task runners conficuration samples.
+
+Samples here are presented with methods of Dummy scenario. To see samples
+of usage other scenarios, go to `doc/samples/tasks/scenarios
+<https://github.com/stackforge/rally/tree/master/doc/samples/tasks/scenarios>`_.
+

doc/samples/tasks/runners/serial/serial.json

@@ -0,0 +1,19 @@
+{
+    "Dummy.dummy": [
+        {
+            "args": {
+                "sleep": 5
+            },
+            "runner": {
+                "type": "serial",
+                "times": 20
+            },
+            "context": {
+                "users": {
+                    "tenants": 1,
+                    "users_per_tenant": 1
+                }
+            }
+        }
+    ]
+}

doc/samples/tasks/runners/serial/serial.yaml

@@ -0,0 +1,12 @@
+---
+  Dummy.dummy:
+    -
+      args:
+        sleep: 5
+      runner:
+        type: "serial"
+        times: 20
+      context:
+        users:
+          tenants: 1
+          users_per_tenant: 1