Update typo in subPath for volume mount

When using a chart with the flux operator and helm3, it fails
when encountering a volumeMount "subpath" instead of "subPath".

This change corrects the typo to the right camelcase entry.

Change-Id: Id2d9ea25445d84f89b299c7f0b24da1cc5aaf264

keystone/Chart.yaml

@@ -14,7 +14,7 @@ apiVersion: v1
 appVersion: v1.0.0
 description: OpenStack-Helm Keystone
 name: keystone
-version: 0.1.5
+version: 0.1.6
 home: https://docs.openstack.org/keystone/latest/
 icon: https://www.openstack.org/themes/openstack/images/project-mascots/Keystone/OpenStack_Project_Keystone_vertical.png
 sources:

keystone/templates/deployment-api.yaml

@@ -115,7 +115,7 @@ spec:
               readOnly: true
             - name: keystone-etc
               mountPath: /etc/keystone/access_rules.json
-              subpath: access_rules.json
+              subPath: access_rules.json
               readOnly: true
             - name: keystone-etc
               mountPath: /etc/keystone/sso_callback_template.html

releasenotes/notes/keystone.yaml

@@ -1,3 +1,9 @@
 ---
 keystone:
   - 0.1.0 Initial Chart
+  - 0.1.1 UPDATE
+  - 0.1.2 UPDATE
+  - 0.1.3 UPDATE
+  - 0.1.4 UPDATE
+  - 0.1.5 Revert clusterissuer change
+  - 0.1.6 Fix typo in subPath entry