Match wildcard certificates

An edge proxy checks whether it already holds a certificate for an arriving request. patterns lists the hostnames the installed certificates cover, and hosts lists the hostnames requests came in on. A hostname is one or more labels joined by dots, and every label is a non empty run of lowercase letters, digits or hyphens. The leftmost label of a pattern may be exactly one asterisk. No other label of a pattern is an asterisk, and no host carries one. A pattern with no asterisk covers a host only when the two read identically. A wildcard pattern covers a host when the host has the same number of labels and every label after the leftmost is identical, so "*.example.com" covers "api.example.com" but covers neither "example.com" nor "eu.api.example.com". Return one boolean per host, in the order given, true when at least one pattern covers that host.