fixed logstash + es update

Issue-ID: CLAMP-341
Change-Id: I5bd3cf20ec445e6972ce40f06f3d40e6056a1d43
Signed-off-by: Krysiak Adam <adam.krysiak@nokia.com>
diff --git a/kubernetes/clamp/charts/clamp-dash-es/values.yaml b/kubernetes/clamp/charts/clamp-dash-es/values.yaml
index 43920b3..f25e40b 100644
--- a/kubernetes/clamp/charts/clamp-dash-es/values.yaml
+++ b/kubernetes/clamp/charts/clamp-dash-es/values.yaml
@@ -32,7 +32,7 @@
 
 # application image
 loggingRepository: docker.elastic.co
-image: elasticsearch/elasticsearch-oss:6.1.3
+image: elasticsearch/elasticsearch-oss:6.6.2
 pullPolicy: Always
 
 # flag to enable debugging - application support required