Added venom test for QA-1053-mock-response-plugin (#578)

Co-authored-by: Pranshu Singh <pranshusingh@Pranshus-MacBook-Pro.local>

venom-tests/QA-1053-api-mock-response-plugin.yml

@@ -0,0 +1,24 @@
+name: Test Mock Response Plugin
+testcases:
+- name: Create API 
+  steps:
+  - type: applyManifests
+    filename: "samples/httpbin_mock.yaml"
+    assertions:
+    - result.code ShouldEqual 0
+
+- name: Test API endpoint with Mock Response Plugin
+  steps:
+    - type: http
+      method: GET
+      url: http://localhost:8080/httpbin/foo
+      assertions:
+      - result.statuscode ShouldEqual 200
+      - result.body ShouldContainKey foo
+
+- name: Delete API
+  steps:
+    - type: exec
+      script: kubectl delete -f ../config/samples/httpbin_mock.yaml
+      assertions:
+      - result.code ShouldEqual 0

venom-tests/samples/httpbin_mock.yaml

@@ -0,0 +1,34 @@
+apiVersion: tyk.tyk.io/v1alpha1
+kind: ApiDefinition
+metadata:
+  name: httpbin
+spec:
+  name: httpbin
+  protocol: http
+  active: true
+  use_keyless: true
+  proxy: 
+    target_url: http://httpbin.org
+    listen_path: /httpbin
+    strip_listen_path: true
+  version_data:
+    default_version: Default
+    not_versioned: true
+    versions:
+      Default:
+        name: Default
+        use_extended_paths: true
+        paths:
+          black_list: []
+          ignored: []
+          white_list: []
+        extended_paths:
+            ignored:
+              - ignore_case: false
+                method_actions:
+                  GET:
+                    action: "reply"
+                    code: 200
+                    data: "{\"foo\": \"bar\"}"
+                    headers: {}
+                path: /foo