ec0066e06c
This transforms generation process from concatenating strings to a list which is joined before passing to the PKI role. It improves code redability and is more error-prone as we don't need to pay close attention to presence of `,` separator while concatenating strings. It will also allow to pass only unique records to PKI role if we have a need for that in the future. Change-Id: I88f74c97592795704170b49bff56b23bc8145f5b