DBus: Update dont_quote[] with ignore_broadcast_ssid parameter

ignore_broadcast_ssid is supported when using with the config
file. But it generates an error if you try to set it via the
DBus interface.

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>

wpa_supplicant/dbus/dbus_new_handlers.c

@@ -139,6 +139,7 @@ static const char * const dont_quote[] = {
 	"key_mgmt", "proto", "pairwise", "auth_alg", "group", "eap",
 	"bssid", "scan_freq", "freq_list", "scan_ssid", "bssid_hint",
 	"bssid_blacklist", "bssid_whitelist", "group_mgmt",
+	"ignore_broadcast_ssid",
 #ifdef CONFIG_MESH
 	"mesh_basic_rates",
 #endif /* CONFIG_MESH */