Bump versions of upstream logging charts

Change-Id: Idb74fd819faeaa000befeda48028e9403d68c3df
diff --git a/logging/Chart.yaml b/logging/Chart.yaml
index 790589f..2817563 100644
--- a/logging/Chart.yaml
+++ b/logging/Chart.yaml
@@ -15,4 +15,4 @@
 
 description: Sets up log aggregation infrastructure in Kubernetes, with elasticstack and kibana
 name: logging
-version: 1.0.0
+version: 1.1.0
diff --git a/logging/requirements.yaml b/logging/requirements.yaml
index 7352088..73fb4ab 100644
--- a/logging/requirements.yaml
+++ b/logging/requirements.yaml
@@ -16,20 +16,20 @@
 dependencies:
 
 - name: elasticsearch
-  version: 1.11.0
+  version: 1.15.3
   repository: https://kubernetes-charts.storage.googleapis.com/
 
 - name: kibana
   condition: kibana.enabled
-  version: 0.16.1
+  version: 1.1.2
   repository: https://kubernetes-charts.storage.googleapis.com/
 
 - name: fluentd-elasticsearch
   condition: fluentd-elasticsearch.enabled
-  version: 1.0.3
+  version: 1.4.1
   repository: https://kubernetes-charts.storage.googleapis.com/
 
 - name: logstash
   condition: logstash.enabled
-  version: 1.0.0
+  version: 1.4.2
   repository: https://kubernetes-charts.storage.googleapis.com/