Merge pull request #1239 from HotelsDotCom/bug/kiam-server-image-configurable

KIAMImage should affect server as well as client.

Author: mumoshu

core/controlplane/config/templates/cloud-config-controller

@@ -5066,7 +5066,7 @@ write_files:
                   secretName: kiam-server-tls
             containers:
               - name: kiam
-                image: quay.io/uswitch/kiam:v2.5
+                image: {{.KIAMImage.RepoWithTag}}
                 imagePullPolicy: Always
                 command:
                   - /server