Stronger basic auth password generation

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

Author: alexellis

chart/openfaas/templates/secret.yaml

@@ -15,5 +15,5 @@ metadata:
 data:
   basic-auth-user: {{ "admin" | b64enc | quote }}
   # kubectl -n openfaas get secret basic-auth -o jsonpath="{.data.basic-auth-password}" | base64 --decode
-  basic-auth-password: {{ randAlphaNum 12 | b64enc | quote }}
+  basic-auth-password: {{ randAlphaNum 32 | b64enc | quote }}
 {{- end }}