Update for InfluxDB Enterprise 1.9.6 (#420)

charts/influxdb-enterprise/Chart.yaml

 apiVersion: v1
-version: 0.1.14
-appVersion: 1.9.5
+version: 0.1.15
+appVersion: 1.9.6
 engine: gotpl
 
 name: influxdb-enterprise

charts/influxdb-enterprise/templates/certmanager-issuer.yaml

 {{- if or .Values.data.https.useCertManager .Values.meta.https.useCertManager -}}
-apiVersion: cert-manager.io/v1alpha2
+apiVersion: cert-manager.io/v1
 kind: Issuer
 metadata:
   name: {{ include "influxdb-enterprise.fullname" . }}

charts/influxdb-enterprise/templates/data-certmanager.yaml

 {{- if and .Values.data.https.enabled .Values.data.https.useCertManager -}}
-apiVersion: cert-manager.io/v1alpha2
+apiVersion: cert-manager.io/v1
 kind: Certificate
 metadata:
   name: {{ include "influxdb-enterprise.fullname" . }}-data

charts/influxdb-enterprise/templates/meta-certmanager.yaml

 {{- if and .Values.meta.https.enabled .Values.meta.https.useCertManager -}}
-apiVersion: cert-manager.io/v1alpha2
+apiVersion: cert-manager.io/v1
 kind: Certificate
 metadata:
   name: {{ include "influxdb-enterprise.fullname" . }}-meta