[Issue 6355][HELM] autorecovery - could not find or load main class (#6373)

This applies the recommended fix from
https://github.com/apache/pulsar/issues/6355#issuecomment-587756717

Fixes #6355

### Motivation

This PR corrects the configmap data which was causing the autorecovery pod to crashloop
with `could not find or load main class`

### Modifications

Updated the configmap var data per [this comment](https://github.com/apache/pulsar/issues/6355#issuecomment-587756717) from @sijie 

(cherry picked from commit af4773bf)

deployment/kubernetes/helm/pulsar/values-mini.yaml

@@ -277,7 +277,7 @@ autoRecovery:
   ## templates/autorecovery-configmap.yaml
   ##
   configData:
-    PULSAR_MEM: "\" -Xms64m -Xmx128m \""
+    BOOKIE_MEM: "\" -Xms64m -Xmx128m \""
 
 ## Pulsar Extra: Dashboard
 ## templates/dashboard-deployment.yaml

deployment/kubernetes/helm/pulsar/values.yaml

@@ -311,7 +311,7 @@ autoRecovery:
   ## templates/autorecovery-configmap.yaml
   ##
   configData:
-    PULSAR_MEM: "\" -Xms1g -Xmx1g \""
+    BOOKIE_MEM: "\" -Xms1g -Xmx1g \""
 
 ## Pulsar Extra: Dashboard
 ## templates/dashboard-deployment.yaml