[client] Automatically register match domains for DNS routes (#3614)

client/internal/dns/file_unix.go

@@ -239,7 +239,7 @@ func searchDomains(config HostDNSConfig) []string {
 			continue
 		}
 
-		listOfDomains = append(listOfDomains, dConf.Domain)
+		listOfDomains = append(listOfDomains, strings.TrimSuffix(dConf.Domain, "."))
 	}
 	return listOfDomains
 }