Go's template language doesn't treat infix `and` as a short-circuit, which led to fatal errors after an update in Go 1.14 surfaced that as a fatal error. This commit removes the infix `and` and replaces it with a default dict to handle the case of a missing Heml value. Closes: https://github.com/rook/rook/issues/5378 Signed-off-by: Judson <nyarly@gmail.com>