Added SCALE_SET to azure instance stop experiment (#496)

Signed-off-by: Akash Shrivastava <akash@chaosnative.com>

charts/azure/azure-instance-stop/engine.yaml

@@ -19,7 +19,7 @@ spec:
             - name: CHAOS_INTERVAL
               value: '30'            
 
-            # provide the target instance name
+            # provide the target instance name(s) (comma separated if multiple)
             - name: AZURE_INSTANCE_NAME
               value: ''
 
@@ -27,3 +27,7 @@ spec:
             - name: RESOURCE_GROUP
               value: ''
             
+            # accepts enable/disable, default is disable
+            - name: SCALE_SET
+              value: ''
+

charts/azure/azure-instance-stop/experiment.yaml

@@ -54,7 +54,7 @@ spec:
     - name: RAMP_TIME
       value: ''
 
-    # provide the target instance name
+    # provide the target instance name(s) (comma separated if multiple)
     - name: AZURE_INSTANCE_NAME
       value: ''
 
@@ -62,6 +62,10 @@ spec:
     - name: RESOURCE_GROUP
       value: ''
     
+    # accepts enable/disable, default is disable
+    - name: SCALE_SET
+      value: ''
+
     # Provide the path of aks credentials mounted from secret  
     - name: AZURE_AUTH_LOCATION
       value: '/tmp/azure.auth'