Support for multiple bootstrap_uri does not work

# What can we help you with?

When running kafka in high availability mode, one would typically set up one's clients with a list of bootstrap uri so that the client can cycle through them and find the first one that is willing to handover its broker topology info. It does not appear that Karapace supports this. I can see that if I pass a list karapace will split the string and operate on the first bootstrap uri, however, i don't see it cycling through the various entries.

Am I missing something?