refactor(experiment): Add pod memory hog default memory consumption (#1576)

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

experiments/generic/pod_memory_hog/pod_memory_hog_k8s_job.yml

@@ -9,8 +9,8 @@ spec:
       labels:
         experiment: pod-memory-hog
     spec:
-      # Placeholder that is updated by the executor for automated runs
-      # Provide appropriate SA (with desired permissions) if executed manually
+      # placeholder that is updated by the executor for automated runs
+      # provide appropriate SA (with desired permissions) if executed manually
       serviceAccountName: %CHAOS_SERVICE_ACCOUNT%
       restartPolicy: Never
       containers:
@@ -37,15 +37,15 @@ spec:
           - name: TARGET_CONTAINER
             value: ''
 
-          # Enter the amount of memory in megabytes to be consumed by the application pod
+          # enter the amount of memory in megabytes to be consumed by the application pod
           # default: 500 (Megabytes) 
           - name: MEMORY_CONSUMPTION
-            value: ''
+            value: '500'
 
           - name: TOTAL_CHAOS_DURATION
             value: '60' # in seconds
 
-          # Period to wait before injection of chaos in sec
+          # period to wait before injection of chaos in sec
           - name: RAMP_TIME
             value: ''
            
@@ -57,7 +57,7 @@ spec:
           - name: LIB_IMAGE
             value: 'litmuschaos/app-memory-stress:latest' 
 
-          # Provide the chaos namespace
+          # provide the chaos namespace
           - name: CHAOS_NAMESPACE
             value: ''