Set failureThreshold to 3 for improved stability (#214)

Signed-off-by: Rokibul Hasan <mdrokibulhasan@appscode.com>

Author: RokibulHasan7

pkg/proxyagent/agent/manifests/charts/addon-agent/templates/addon-agent-deployment.yaml

@@ -60,7 +60,7 @@ spec:
               scheme: HTTP
               port: 8888
             initialDelaySeconds: 10
-            failureThreshold: 1
+            failureThreshold: 3
             periodSeconds: 10
           env:
             {{- if .Values.proxyConfig.HTTP_PROXY }}