feat(helm): add namespaceOverride support to FluentBit chart

Adds fluentbit.namespaceOverride value so users can deploy FluentBit
resources into a namespace different from .Release.Namespace.

Fixes #1918

Signed-off-by: shawn.mulford <48554759+hsdp-smulford@users.noreply.github.com>

Author: hsdp-smulford

charts/fluent-operator/templates/fluentbit-fluentBit.yaml

@@ -4,7 +4,7 @@ apiVersion: fluentbit.fluent.io/v1alpha2
 kind: FluentBit
 metadata:
   name: fluent-bit
-  namespace: {{ .Release.Namespace | quote }}
+  namespace: {{ default .Release.Namespace .Values.fluentbit.namespaceOverride | quote }}
   labels:
     app.kubernetes.io/name: fluent-bit
 spec:

charts/fluent-operator/values.yaml

@@ -113,6 +113,8 @@ operator:
 fluentbit:
   # -- Enable Fluent Bit deployment
   enable: true
+  # -- Override the namespace for FluentBit resources; defaults to .Release.Namespace
+  namespaceOverride: ""
   serviceMonitor:
     # -- Enable Prometheus ServiceMonitor for Fluent Bit
     enable: false