feat: include func support (#1187)

* feat: include func support

Signed-off-by: yxxhero <aiopsclub@163.com>

test/integration/test-cases/include-template-func/input/_helpers.tpl

@@ -0,0 +1,3 @@
+{{- define "echo" -}}
+{{ .Echo }}
+{{- end }}

test/integration/test-cases/include-template-func/input/helmfile.yaml.gotmpl

@@ -0,0 +1,8 @@
+releases:
+- name: '{{ include "echo" (dict "Echo" "include") }}'
+  chart: ../../../charts/raw
+  values:
+  - values/configmap.gotmpl
+
+helmfiles:
+- nested/helmfile.yaml.gotmpl

test/integration/test-cases/include-template-func/input/nested/_helpers.tpl

@@ -0,0 +1,3 @@
+{{- define "echo" -}}
+nested-{{ .Echo }}
+{{- end }}

test/integration/test-cases/include-template-func/input/nested/helmfile.yaml.gotmpl

@@ -0,0 +1,12 @@
+releases:
+- name: '{{ include "echo" (dict "Echo" "include") }}'
+  chart: ../../../../charts/raw
+  values:
+  - templates:
+    - |
+      apiVersion: v1
+      kind: ConfigMap
+      metadata:
+        name: {{ include "echo" (dict "Echo" "include") }}
+      data:
+        name: {{ include "echo" (dict "Echo" "include") }} 

test/integration/test-cases/include-template-func/input/values/_helpers.tpl

@@ -0,0 +1,3 @@
+{{- define "echo" -}}
+{{ .Echo }}
+{{- end }}

test/integration/test-cases/include-template-func/input/values/configmap.gotmpl

@@ -0,0 +1,8 @@
+templates:
+- |
+  apiVersion: v1
+  kind: ConfigMap
+  metadata:
+    name: {{ include "echo" (dict "Echo" "include") }}
+  data:
+    name: {{ include "echo" (dict "Echo" "include") }} 

test/integration/test-cases/include-template-func/output/template-result

@@ -0,0 +1,22 @@
+Building dependency release=nested-include, chart=../../../../charts/raw
+Templating release=nested-include, chart=../../../../charts/raw
+---
+# Source: raw/templates/resources.yaml
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: nested-include
+data:
+  name: nested-include
+
+Building dependency release=include, chart=../../../charts/raw
+Templating release=include, chart=../../../charts/raw
+---
+# Source: raw/templates/resources.yaml
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: include
+data:
+  name: include
+

test/integration/test-cases/include-template-func/output/template-result-live

@@ -0,0 +1,23 @@
+Live output is enabled
+Building dependency release=nested-include, chart=../../../../charts/raw
+Templating release=nested-include, chart=../../../../charts/raw
+---
+# Source: raw/templates/resources.yaml
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: nested-include
+data:
+  name: nested-include
+
+Building dependency release=include, chart=../../../charts/raw
+Templating release=include, chart=../../../charts/raw
+---
+# Source: raw/templates/resources.yaml
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: include
+data:
+  name: include
+