[stable/ghost] bump major version (#18849)

Helm performs a lookup for the object based on its group (apps), version (v1), and kind (Deployment). Also known as its GroupVersionKind, or GVK. Changing the GVK is considered a compatibility breaker from Kubernetes' point of view, so you cannot "upgrade" those objects to the new GVK in-place. Earlier versions of Helm 3 did not perform the lookup correctly which has since been fixed to match the spec.

In https://github.com/helm/charts/pulls/17297 the `apiVersion` of the deployment resources was updated to `apps/v1` in tune with the api's deprecated, resulting in compatibility breakage.

This major version signifies this change.

Signed-off-by: Sameer Naik <sameersbn@vmware.com>

stable/ghost/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: ghost
-version: 8.0.6
+version: 9.0.0
 appVersion: 3.0.2
 description: A simple, powerful publishing platform that allows you to share your stories with the world
 keywords:

stable/ghost/README.md

@@ -181,6 +181,14 @@ See the [Parameters](#parameters) section to configure the PVC or to disable per
 
 ## Upgrading
 
+### To 9.0.0
+
+Helm performs a lookup for the object based on its group (apps), version (v1), and kind (Deployment). Also known as its GroupVersionKind, or GVK. Changing the GVK is considered a compatibility breaker from Kubernetes' point of view, so you cannot "upgrade" those objects to the new GVK in-place. Earlier versions of Helm 3 did not perform the lookup correctly which has since been fixed to match the spec.
+
+In https://github.com/helm/charts/pulls/17297 the `apiVersion` of the deployment resources was updated to `apps/v1` in tune with the api's deprecated, resulting in compatibility breakage.
+
+This major version signifies this change.
+
 ### To 5.0.0
 
 Backwards compatibility is not guaranteed unless you modify the labels used on the chart's deployments.

stable/ghost/requirements.lock

@@ -1,6 +1,6 @@
 dependencies:
 - name: mariadb
   repository: https://kubernetes-charts.storage.googleapis.com/
-  version: 6.13.0
-digest: sha256:234702bf5dbec8956e4f113b783db5559f7d3cbf60abf8a89c7a3c73b3c79c5c
-generated: 2019-11-04T07:45:36.20980667Z
+  version: 7.0.1
+digest: sha256:27bef733eb099a7377055cfe2c48e013bd4d55650ff18b50138c80488c812b0b
+generated: "2019-11-13T22:05:56.823585977+05:30"

stable/ghost/requirements.yaml

@@ -1,6 +1,6 @@
 dependencies:
 - name: mariadb
-  version: 6.x.x
+  version: 7.x.x
   repository: https://kubernetes-charts.storage.googleapis.com/
   condition: mariadb.enabled
   tags:

stable/ghost/templates/_helpers.tpl

@@ -179,3 +179,14 @@ but Helm 2.9 and 2.10 does not support it, so we need to implement this if-else
     {{- end -}}
 {{- end -}}
 {{- end -}}
+
+{{/*
+Return the appropriate apiVersion for deployment.
+*/}}
+{{- define "ghost.deployment.apiVersion" -}}
+{{- if semverCompare "<1.14-0" .Capabilities.KubeVersion.GitVersion -}}
+{{- print "extensions/v1beta1" -}}
+{{- else -}}
+{{- print "apps/v1" -}}
+{{- end -}}
+{{- end -}}

stable/ghost/templates/deployment.yaml

@@ -1,5 +1,5 @@
 {{- if include "ghost.host" . -}}
-apiVersion: apps/v1
+apiVersion: {{ template "ghost.deployment.apiVersion" . }}
 kind: Deployment
 metadata:
   name: {{ template "ghost.fullname" . }}