chore(new-chart): Add chaos chart for pod network duplication (#253)

Signed-off-by: Udit Gaurav <uditgaurav@gmail.com>

charts/generic/pod-network-duplication/experiment.yaml

@@ -0,0 +1,54 @@
+apiVersion: litmuschaos.io/v1alpha1
+description:
+  message: |
+    Injects network packet duplication on pods belonging to an app deployment
+kind: ChaosExperiment
+metadata:
+  name: pod-network-duplication
+  version: 0.1.0
+spec:
+  definition:
+    scope: Namespaced
+    permissions:
+    - apiGroups:
+        - ""
+        - "batch"
+        - "litmuschaos.io"
+      resources:
+        - "jobs"
+        - "pods"
+        - "pods/log"
+        - "events"
+        - "chaosengines"
+        - "chaosexperiments"
+        - "chaosresults"
+      verbs:
+        - "get"
+        - "list"
+        - "patch"
+        - "create"
+        - "update"
+        - "delete"
+    image: "litmuschaos/go-runner:latest"
+    args:
+    - -c
+    - ./experiments/pod-network-duplication
+    command:
+    - /bin/bash
+    env:
+    - name: TOTAL_CHAOS_DURATION
+      value: '60'
+    - name: RAMP_TIME
+      value: ''
+    - name: TARGET_CONTAINER
+      value: ''
+    - name: NETWORK_INTERFACE
+      value: 'eth0'
+    - name: NETWORK_PACKET_DUPLICATION_PERCENTAGE
+      value: '100' # in percentage
+    - name: LIB
+      value: 'pumba'      
+    - name: LIB_IMAGE
+      value: 'gaiaadm/pumba:0.6.5'
+    labels:
+      name: pod-network-duplication