Added reponse body, content type and encoding fields; Removed trailing whitespaces for some files (#567)

Signed-off-by: avaakash <as86414@gmail.com>

Signed-off-by: avaakash <as86414@gmail.com>

experiments/generic/pod-http-modify-body/pod-http-modify-body.chartserviceversion.yaml

@@ -1,36 +1,36 @@
 apiVersion: litmuchaos.io/v1alpha1
 kind: ChartServiceVersion
 metadata:
-  name: pod-http-modify-body 
+  name: pod-http-modify-body
   version: 0.1.0
   annotations:
     categories: generic
 spec:
-  displayName: pod-http-modify-body 
+  displayName: pod-http-modify-body
   categoryDescription: >
-    Pod-http-modify-body contains chaos to disrupt http requests of kubernetes pods. This experiment can modify the body of the response from the service targetted. 
+    Pod-http-modify-body contains chaos to disrupt http requests of kubernetes pods. This experiment can modify the body of the response from the service targetted.
     - Causes modification of response body of the HTTP request.
     - The application pod should be healthy once chaos is stopped. Service-requests should be served despite chaos.
-  keywords: 
-    - "pods" 
-    - "kubernetes" 
-    - "generic" 
-    - "exec" 
-    - "http" 
+  keywords:
+    - "pods"
+    - "kubernetes"
+    - "generic"
+    - "exec"
+    - "http"
     - "response body"
-  platforms: 
+  platforms:
     - "Minikube"
   maturity: alpha
-  maintainers: 
-    - name: Akash Shrivastava 
-      email: akash.shrivastava@harness.io 
-  minKubeVersion: 1.12.0 
-  provider: 
+  maintainers:
+    - name: Akash Shrivastava
+      email: akash.shrivastava@harness.io
+  minKubeVersion: 1.12.0
+  provider:
     name: Harness
   labels:
     app.kubernetes.io/component: chartserviceversion
     app.kubernetes.io/version: latest
-  links: 
+  links:
     - name: Source Code
       url: https://github.com/litmuschaos/litmus-go/tree/master/experiments/generic/pod-http-modify-body
     - name: Documentation