CASSGO-71 Make HostFilter interface easier to test#1874

OleksiienkoMykyta wants to merge 1 commit intoapache:trunkapache/cassandra-gocql-driver:trunkfrom

OleksiienkoMykyta:CASSGO-71-External-HostFilter-implementations-cannot-be-tested-against-HostFilter-interfaceOleksiienkoMykyta/gocql:CASSGO-71-External-HostFilter-implementations-cannot-be-tested-against-HostFilter-interfaceCopy head branch name to clipboard