expose Enable_Chunk_Trace in the crd, enabling TAP debuging

implements #1586 closes #1586

This enables the users to turn debug traces on/off, as per https://docs.fluentbit.io/manual/administration/troubleshooting

I validate that I can spin up the operator and:
- enable/disable the option, it respects the SIGHUP&hot reload correcty
- see the expected result - I can now switch to a debug image and use
  the  curl API to enable tracing

In my testing I used the following spec:

```
apiVersion: fluentbit.fluent.io/v1alpha2
kind: FluentBit
metadata:
  name: fluent-bit
  namespace: fluent
  labels:
    app.kubernetes.io/name: fluent-bit
spec:
  # renovate: datasource=docker depName=ghcr.io/fluent/fluent-operator/fluent-bit
  image: ghcr.io/fluent/fluent-operator/fluent-bit:4.0-debug
  fluentBitConfigName: fluent-bit-config

---
apiVersion: fluentbit.fluent.io/v1alpha2
kind: ClusterFluentBitConfig
metadata:
  name: fluent-bit-config
  namespace: fluent
  labels:
    app.kubernetes.io/name: fluent-bit
spec:
  service:
    enableChunkTrace: true
    httpServer: true
    httpListen: "127.0.0.1"
  inputSelector:
    matchLabels:
      fluentbit.fluent.io/enabled: "true"
  outputSelector:
    matchLabels:
      fluentbit.fluent.io/enabled: "true"

---
apiVersion: fluentbit.fluent.io/v1alpha2
kind: ClusterInput
metadata:
  name: dummy
  labels:
    fluentbit.fluent.io/enabled: "true"
spec:
  alias: dummy
  dummy:
    tag: my_dummy

---
apiVersion: fluentbit.fluent.io/v1alpha2
kind: ClusterOutput
metadata:
  name: stdout
  labels:
    fluentbit.fluent.io/enabled: "true"
spec:
  alias: stdout
  match: "*"
  stdout: {}

```

I could exec into the container and enable tracing with:

```
curl 127.0.0.1:2020/api/v1/trace/dummy

```

To disable it, I ran:

```
curl -X DELETE 127.0.0.1:2020/api/v1/trace/dummy
```

I saw the correct output reflected on fluentbit container log.

Signed-off-by: Daniel Podwysocki <[email protected]>

Author: danielpodwysocki

apis/fluentbit/v1alpha2/clusterfluentbitconfig_types.go

@@ -79,6 +79,8 @@ type Storage struct {
 type Service struct {
 	// If true go to background on start
 	Daemon *bool `json:"daemon,omitempty"`
+	// Enable input/output tracing on debug images, controlled more granualry via the http API
+	EnableChunkTrace *bool `json:"enableChunkTrace,omitempty"`
 	// Interval to flush output
 	FlushSeconds *float64 `json:"flushSeconds,omitempty"`
 	// Wait time on exit
@@ -153,6 +155,9 @@ func (s *Service) Params() *params.KVs {
 	if s.Daemon != nil {
 		m.Insert("Daemon", fmt.Sprint(*s.Daemon))
 	}
+	if s.EnableChunkTrace != nil {
+		m.Insert("Enable_Chunk_Trace", fmt.Sprint(*s.EnableChunkTrace))
+	}
 	if s.FlushSeconds != nil {
 		m.Insert("Flush", fmt.Sprint(*s.FlushSeconds))
 	}

apis/fluentbit/v1alpha2/zz_generated.deepcopy.go

@@ -299,6 +299,10 @@ spec:
                     type: string
                   emitterStorageType:
                     type: string
+                  enableChunkTrace:
+                    description: Enable input/output tracing on debug images, controlled
+                      more granualry via the http API
+                    type: boolean
                   flushSeconds:
                     description: Interval to flush output
                     type: number

charts/fluent-operator/charts/fluent-bit-crds/crds/fluentbit.fluent.io_clusterfluentbitconfigs.yaml

@@ -331,6 +331,10 @@ spec:
                     type: string
                   emitterStorageType:
                     type: string
+                  enableChunkTrace:
+                    description: Enable input/output tracing on debug images, controlled
+                      more granualry via the http API
+                    type: boolean
                   flushSeconds:
                     description: Interval to flush output
                     type: number

charts/fluent-operator/charts/fluent-bit-crds/crds/fluentbit.fluent.io_fluentbitconfigs.yaml

@@ -299,6 +299,10 @@ spec:
                     type: string
                   emitterStorageType:
                     type: string
+                  enableChunkTrace:
+                    description: Enable input/output tracing on debug images, controlled
+                      more granualry via the http API
+                    type: boolean
                   flushSeconds:
                     description: Interval to flush output
                     type: number

config/crd/bases/fluentbit.fluent.io_clusterfluentbitconfigs.yaml

@@ -331,6 +331,10 @@ spec:
                     type: string
                   emitterStorageType:
                     type: string
+                  enableChunkTrace:
+                    description: Enable input/output tracing on debug images, controlled
+                      more granualry via the http API
+                    type: boolean
                   flushSeconds:
                     description: Interval to flush output
                     type: number

config/crd/bases/fluentbit.fluent.io_fluentbitconfigs.yaml

@@ -1757,6 +1757,10 @@ spec:
                     type: string
                   emitterStorageType:
                     type: string
+                  enableChunkTrace:
+                    description: Enable input/output tracing on debug images, controlled
+                      more granualry via the http API
+                    type: boolean
                   flushSeconds:
                     description: Interval to flush output
                     type: number
@@ -16538,6 +16542,10 @@ spec:
                     type: string
                   emitterStorageType:
                     type: string
+                  enableChunkTrace:
+                    description: Enable input/output tracing on debug images, controlled
+                      more granualry via the http API
+                    type: boolean
                   flushSeconds:
                     description: Interval to flush output
                     type: number

manifests/setup/fluent-operator-crd.yaml

@@ -1757,6 +1757,10 @@ spec:
                     type: string
                   emitterStorageType:
                     type: string
+                  enableChunkTrace:
+                    description: Enable input/output tracing on debug images, controlled
+                      more granualry via the http API
+                    type: boolean
                   flushSeconds:
                     description: Interval to flush output
                     type: number
@@ -16538,6 +16542,10 @@ spec:
                     type: string
                   emitterStorageType:
                     type: string
+                  enableChunkTrace:
+                    description: Enable input/output tracing on debug images, controlled
+                      more granualry via the http API
+                    type: boolean
                   flushSeconds:
                     description: Interval to flush output
                     type: number