Adding initial fluentbit helm chart (rackerlabs#98)

Signed-off-by: Chris Blumentritt <[email protected]>

helm-configs/fluentbit/README.md

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+# Install the fluentbit helm chart
+
+```
+helm repo add fluent https://fluent.github.io/helm-charts
+helm repo update`
+helm install --values fluentbit-helm-overrides.yaml fluentbit fluent/fluent-bit
+```

helm-configs/fluentbit/fluentbit-helm-overrides.yaml

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+daemonSetVolumes:
+  - name: varlog
+    hostPath:
+      path: /var/log
+  - name: varlibdockercontainers
+    hostPath:
+      path: /var/lib/docker/containers
+  - name: etcmachineid
+    hostPath:
+      path: /etc/machine-id
+      type: File
+  - name: varlogcontainers
+    hostPath:
+      path: /var/log/containers
+daemonSetVolumeMounts:
+  - name: varlog
+    mountPath: /var/log
+  - name: varlibdockercontainers
+    mountPath: /var/lib/docker/containers
+    readOnly: true
+  - name: etcmachineid
+    mountPath: /etc/machine-id
+    readOnly: true
+  - name: varlogcontainers
+    mountPath: /var/log/containers
+    readOnly: true
+config:
+  outputs: |
+    [OUTPUT]
+        Name loki
+        Match kube.*
+        Host loki-gateway.grafana.svc.cluster.local
+        Port 80
+        Retry_Limit False
+        labels job=fluentbit
+        auto_kubernetes_labels on
+
+    [OUTPUT]
+        Name loki
+        Match host.*
+        Host loki-gateway.grafana.svc.cluster.local
+        Port 80
+        Retry_Limit False
+        labels job=fluentbit
+        auto_kubernetes_labels on