Support additional k8s filter params (#4406)

* Support additional k8s filter params

* trailing spaces

* values typo

* lower case values

stable/fluent-bit/Chart.yaml

@@ -1,5 +1,5 @@
 name: fluent-bit
-version: 0.2.12
+version: 0.2.13
 appVersion: 0.12.15
 description: Fast and Lightweight Log/Data Forwarder for Linux, BSD and OSX
 keywords:

stable/fluent-bit/templates/config.yaml

@@ -23,8 +23,11 @@ data:
         Skip_Long_Lines  On
 
     [FILTER]
-        Name   kubernetes
-        Match  kube.*
+        Name             kubernetes
+        Match            kube.*
+        Kube_URL         {{ .Values.filter.kubeURL }}
+        Kube_CA_File     {{ .Values.filter.kubeCAFile }}
+        Kube_Token_File  {{ .Values.filter.kubeTokenFile }}
 {{- if .Values.filter.mergeJSONLog }}
         Merge_JSON_Log   On
 {{- end }}

stable/fluent-bit/values.yaml

@@ -67,7 +67,10 @@ tolerations: []
 ##
 nodeSelector: {}
 
-filter: {}
+filter:
+  kubeURL: https://kubernetes.default.svc:443
+  kubeCAFile: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
+  kubeTokenFile: /var/run/secrets/kubernetes.io/serviceaccount/token
 # If true, check to see if the log field content is a JSON string map, if so,
 # it append the map fields as part of the log structure.
 #  mergeJSONLog: true