Add Http Request Scenario

* (сheck-random-request) Add Multiple Http request scenario which
takes as input a list of Requests and compares response of random
picked request from the list with the expected Response.

* (сheck-request) Improve flexiblity of check-response scenario and
rename check-response to check-request.

Co-Authored-By: kumar rishabh <shailrishabh@gmail.com>
Co-Authored-By: Roman Vasilets <rvasilets@mirantis.com>

Change-Id: Id70935616c013271392219b1e642b5b87ddb4b9c

rally-jobs/rally-mos.yaml

@@ -468,15 +468,16 @@
         failure_rate:
           max: 0
 
-  Requests.check_response:
+  HttpRequests.check_request:
     -
       args:
-          url: "http://git.openstack.org/cgit"
+        url: "http://www.example.com"
-          response: 200
+        method: "GET"
+        status_code: 200
       runner:
         type: "constant"
-        times: 1
+        times: 2
-        concurrency: 1
+        concurrency: 2
       sla:
         failure_rate:
           max: 0

rally-jobs/rally.yaml

@@ -1406,15 +1406,38 @@
         failure_rate:
           max: 0
 
-  Requests.check_response:
+  HttpRequests.check_request:
     -
       args:
-          url: "http://www.google.com"
+        url: "http://www.example.com"
-          response: 200
+        method: "GET"
+        status_code: 200
       runner:
         type: "constant"
-        times: 5
+        times: 2
-        concurrency: 5
+        concurrency: 2
+      sla:
+        failure_rate:
+          max: 0
+
+  HttpRequests.check_random_request:
+    -
+      args:
+        requests:
+          -
+            url: "http://www.example.com"
+            method: "GET"
+          -
+            url: "http://www.openstack.org"
+            method: "GET"
+        status_code: 200
+      runner:
+        type: "constant"
+        times: 2
+        concurrency: 2
+      sla:
+        failure_rate:
+          max: 0
 
   NovaSecGroup.create_and_delete_secgroups:
     -

samples/tasks/scenarios/requests/check-random-request.json

@@ -0,0 +1,17 @@
+{
+    "HttpRequests.check_random_request": [
+        {
+            "args": {
+                "requests": [{"url": "http://www.example.com", "method": "GET",
+                    "status_code": 200},
+                    {"url": "http://www.openstack.org", "method": "GET"}],
+                "status_code": 200
+            },
+            "runner": {
+                "type": "constant",
+                "times": 20,
+                "concurrency": 5
+            }
+        }
+    ]
+}

samples/tasks/scenarios/requests/check-random-request.yaml

@@ -0,0 +1,17 @@
+---
+  HttpRequests.check_random_request:
+    -
+      args:
+        requests:
+          -
+            url: "http://www.example.com"
+            method: "GET"
+            status_code: 200
+          -
+            url: "http://www.openstack.org"
+            method: "GET"
+        status_code: 200
+      runner:
+        type: "constant"
+        times: 20
+        concurrency: 5

samples/tasks/scenarios/requests/check-request.json

@@ -0,0 +1,17 @@
+{
+    "HttpRequests.check_request": [
+        {
+            "args": {
+                "url": "http://www.example.com",
+                "method": "GET",
+                "status_code": 200,
+                "allow_redirects": false
+            },
+            "runner": {
+                "type": "constant",
+                "times": 20,
+                "concurrency": 5
+            }
+        }
+    ]
+}

samples/tasks/scenarios/requests/check-request.yaml

@@ -0,0 +1,12 @@
+---
+  HttpRequests.check_request:
+    -
+      args:
+        url: "http://www.example.com"
+        method: "GET"
+        status_code: 200
+        allow_redirects: False
+      runner:
+        type: "constant"
+        times: 20
+        concurrency: 5