OCPBUGS#31264: Warning to not use htpasswd in production

Author: bergerhoffer

modules/identity-provider-htpasswd-about.adoc

@@ -6,3 +6,8 @@
 = About htpasswd authentication
 
 Using htpasswd authentication in {product-title} allows you to identify users based on an htpasswd file. An htpasswd file is a flat file that contains the user name and hashed password for each user. You can use the `htpasswd` utility to create this file.
+
+[WARNING]
+====
+Do not use htpasswd authentication in {product-title} for production environments. Use htpasswd authentication only for development environments.
+====