[ca-issuer]: Support different versions of cert-manager

Support cert manager version v1.2.0 by default and
logic to support earlier versions.

Change-Id: I70a45eb3cccc7cfbe2784048a4524bd9e4d832df

ca-issuer/Chart.yaml

@@ -16,5 +16,5 @@ appVersion: "1.0"
 description: Certificate Issuer chart for OSH
 home: https://cert-manager.io/
 name: ca-issuer
-version: 0.2.0
+version: 0.2.1
 ...

ca-issuer/templates/issuer-ca.yaml

@@ -15,7 +15,7 @@ limitations under the License.
 {{- if .Values.manifests.issuer }}
 {{- $envAll := . }}
 ---
-{{- if semverCompare "< 0.2.0" .Chart.Version }}
+{{- if semverCompare "< v1.0.0" .Values.cert_manager_version }}
 apiVersion: cert-manager.io/v1alpha3
 {{- else }}
 apiVersion: cert-manager.io/v1

ca-issuer/values.yaml

@@ -19,6 +19,11 @@ conf:
       crt: null
       key: null
 
+# Default Version of jetstack/cert-manager being deployed.
+# Starting at v1.0.0, api-version: cert-manager.io/v1 is used
+# For previous apiVersion: cert-manager.io/v1alpha3, change to older version (such as v0.15.0)
+cert_manager_version: v1.0.0
+
 manifests:
   issuer: true
   secret_ca: true

releasenotes/notes/ca-issuer.yaml

@@ -5,4 +5,5 @@ ca-issuer:
   - 0.1.2 Update apiVersion of Issuer to v1
   - 0.1.3 Revert - Update apiVersion of Issuer to v1
   - 0.2.0 Only Cert-manager version v1.0.0 or greater will be supported
+  - 0.2.1 Cert-manager "< v1.0.0" supports cert-manager.io/v1alpha3 else use api cert-manager.io/v1
 ...