feat: Add kiali labels helper

chart/templates/_helpers.tpl

 {{- define "values-bigbang" -}}
-{{- /* 
+{{- /*
  * bigbang.values-bigbang: Produce a stripped version of the bigbang variables
  * in the root namespace suitable for inclusion in wrapper or package variables definitions
  */ -}}
@@ -170,23 +170,23 @@ stringData:
     {{- toYaml .package.values | nindent 4 }}
 {{- end -}}
 
-{{/* 
+{{/*
 bigbang.addValueIfSet can be used to nil check parameters before adding them to the values.
   Expects a list with the following params:
     * [0] - (string) <yaml_key_to_add>
     * [1] - (interface{}) <value_to_check>
-  
-  No output is generated if <value> is undefined, however, explicitly set empty values 
+
+  No output is generated if <value> is undefined, however, explicitly set empty values
   (i.e. `username=""`) will be passed along. All string fields will be quoted.
 
-  Example command: 
+  Example command:
   - `{{ (list "name" .username) | include "bigbang.addValueIfSet" }}`
     * When `username: Aniken`
       -> `name: "Aniken"`
     * When `username: ""`
       -> `name: ""`
     * When username is not defined
-      -> no output 
+      -> no output
 */}}
 {{- define "bigbang.addValueIfSet" -}}
   {{- $key := (index . 0) }}
@@ -195,20 +195,20 @@ bigbang.addValueIfSet can be used to nil check parameters before adding them to
   {{- if not (kindIs "invalid" $value) }}
     {{- /*Handle strings*/}}
     {{- if kindIs "string" $value }}
-      {{- printf "\n%s" $key }}: {{ $value | quote }} 
+      {{- printf "\n%s" $key }}: {{ $value | quote }}
     {{- /*Hanldle slices*/}}
     {{- else if kindIs "slice" $value }}
-      {{- printf "\n%s" $key }}:    
+      {{- printf "\n%s" $key }}:
         {{- range $value }}
           {{- if kindIs "string" . }}
             {{- printf "\n  - %s" (. | quote) }}
-          {{- else }} 
+          {{- else }}
             {{- printf "\n  - %v" . }}
           {{- end }}
         {{- end }}
     {{- /*Handle other types (no quotes)*/}}
     {{- else }}
-      {{- printf "\n%s" $key }}: {{ $value }} 
+      {{- printf "\n%s" $key }}: {{ $value }}
     {{- end }}
   {{- end }}
 {{- end -}}
@@ -230,6 +230,28 @@ bigbang.dev/istioVersion: {{ .Values.istio.helmRepo.tag }}{{ if .Values.istio.en
 {{- end -}}
 {{- end -}}
 
+{{/*
+App Label for Kiali trace correlation
+To be used for Kiali-required labels on pods
+This will:
+  * enable proper linking of Jaeger traces in Kiali
+  * enable full Kiali label tracking of pods
+*/}}
+{{- define "kialiAppLabel" -}}
+app: {{ "{{ .Chart.Name }}" | quote }}
+{{- end -}}
+
+{{/*
+Version label for Kiali trace correlation
+To be used for Kiali-required labels on pods
+This will:
+  * enable proper linking of Jaeger traces in Kiali
+  * enable full Kiali label tracking of pods
+*/}}
+{{- define "kialiVersionLabel" -}}
+version: {{ "{{ .Chart.AppVersion }}" | quote }}
+{{- end -}}
+
 {{- /* Helpers below this line are in support of the Big Bang extensibility feature */ -}}
 
 {{- /* Converts the string in . to a legal Kubernetes resource name */ -}}