Update elastic-stack to use latest logstash chart (#9201)

Signed-off-by: Johnathan Rodgers <jrodgers@powerhrg.com>

stable/elastic-stack/Chart.yaml

@@ -3,7 +3,7 @@ description: A Helm chart for ELK
 home: https://www.elastic.co/products
 icon: https://www.elastic.co/assets/bltb35193323e8f1770/logo-elastic-stack-lt.svg
 name: elastic-stack
-version: 1.0.0
+version: 1.1.0
 appVersion: 6.0
 maintainers:
 - name: rendhalver

stable/elastic-stack/requirements.lock

@@ -1,22 +1,22 @@
 dependencies:
 - name: elasticsearch
   repository: https://kubernetes-charts.storage.googleapis.com/
-  version: 1.13.2
+  version: 1.13.3
 - name: kibana
   repository: https://kubernetes-charts.storage.googleapis.com/
-  version: 0.16.4
+  version: 0.17.1
 - name: filebeat
   repository: https://kubernetes-charts.storage.googleapis.com/
-  version: 1.0.3
+  version: 1.0.4
 - name: logstash
   repository: https://kubernetes-charts.storage.googleapis.com/
-  version: 1.1.0
+  version: 1.2.1
 - name: fluentd
   repository: https://kubernetes-charts.storage.googleapis.com/
   version: 1.0.0
 - name: fluent-bit
   repository: https://kubernetes-charts.storage.googleapis.com/
-  version: 0.15.0
+  version: 0.16.1
 - name: fluentd-elasticsearch
   repository: https://kubernetes-charts.storage.googleapis.com/
   version: 1.1.0
@@ -29,5 +29,5 @@ dependencies:
 - name: elasticsearch-exporter
   repository: https://kubernetes-charts.storage.googleapis.com/
   version: 0.4.1
-digest: sha256:8107bab1d2e9cff9bb3452bd3f21fa0e3a681a62a79a732466a2dafb7ad2d3d3
-generated: 2018-11-01T13:44:47.784814059-04:00
+digest: sha256:ecbfa186167b7ff55c5f16fe55edb3bc31808952699192320f49bf538662fc26
+generated: 2018-11-12T13:01:50.582808022-05:00

stable/elastic-stack/requirements.yaml

@@ -10,7 +10,7 @@ dependencies:
   repository: https://kubernetes-charts.storage.googleapis.com/
   condition: filebeat.enabled
 - name: logstash
-  version: ^1.1.0
+  version: ^1.2.1
   repository: https://kubernetes-charts.storage.googleapis.com/
   condition: logstash.enabled
 - name: fluentd