Introduce pub consts for file_header and file_footerw

Author: Maleware

crates/stackable-operator/src/config/fragment.rs

@@ -18,6 +18,9 @@ use crate::role_utils::{Role, RoleGroup};
 use k8s_openapi::api::core::v1::PodTemplateSpec;
 use snafu::Snafu;
 
+pub const FILE_HEADER_VARIABLE: &str = "EXPERIMENTAL_FILE_HEADER";
+pub const FILE_FOOTER_VARIABLE: &str = "EXPERIMENTAL_FILE_FOOTER";
+
 pub use stackable_operator_derive::Fragment;
 
 /// Contains context used for generating validation errors