Chore(stress-chaos): Add stress chaos charts (#475)

Signed-off-by: udit <udit@chaosnative.com>

Co-authored-by: Shubham Chaudhary <shubham.chaudhary@mayadata.io>

charts/generic/pod-memory-hog/pod-memory-hog.chartserviceversion.yaml

@@ -1,9 +1,9 @@
 apiVersion: litmuchaos.io/v1alpha1
 kind: ChartServiceVersion
 metadata:
-  createdAt: 2020-04-10T10:28:08Z
+  createdAt: 2021-06-16T10:28:08Z
   name: pod-memory-hog
-  version: 0.1.4
+  version: 0.1.0
   annotations:
     categories: Kubernetes
     vendor: CNCF
@@ -11,8 +11,9 @@ metadata:
 spec:
   displayName: pod-memory-hog
   categoryDescription: |
-    Pod-Memory-Hog contains chaos to consume Memory resouces of specified containers in Kubernetes pods.  
-    - Consumes the memory specified by executing a dd command against special files /dev/zero(input) and /dev/null(output)
+    Pod-Memory-Hog contains chaos to consume memory resouces of specified containers in Kubernetes pods.    
+    - Causes memory resource consumption on specified application containers using cgroups and litmus nsutil that consume memory resources of the given target containers.
+    - It Can test the application's resilience to potential slowness/unavailability of some replicas due to high memory load
     - The application pod should be healthy once chaos is stopped. Expectation is that service-requests should be served despite chaos.
   keywords:
     - Kubernetes
@@ -27,10 +28,10 @@ spec:
   maturity: alpha
   maintainers:
     - name: Udit Gaurav
-      email: udit.gaurav@mayadata.io
+      email: udit@chaosnative.com
   minKubeVersion: 1.12.0
   provider:
-    name: Mayadata
+    name: ChaosNative
   labels:
     app.kubernetes.io/component: chartserviceversion
     app.kubernetes.io/version: latest